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23103999612 = 22326122945943
BaseRepresentation
bin10101100001000110…
…110000111001111100
32012122011020210020100
4111201012300321330
5334304110441422
614340330521100
71445352520311
oct254106607174
965564223210
1023103999612
119886672961
124589596190
1322427a32b5
141192640d08
159035047ac
hex5611b0e7c

23103999612 has 72 divisors (see below), whose sum is σ = 59619691040. Its totient is φ = 7541838720.

The previous prime is 23103999553. The next prime is 23103999619. The reversal of 23103999612 is 21699930132.

23103999612 is a `hidden beast` number, since 23 + 1 + 0 + 3 + 9 + 9 + 9 + 612 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23103999619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479913 + ... + 525855.

Almost surely, 223103999612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23103999612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29809845520).

23103999612 is an abundant number, since it is smaller than the sum of its proper divisors (36515691428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23103999612 is a wasteful number, since it uses less digits than its factorization.

23103999612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46243 (or 46238 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 23103999612 in words is "twenty-three billion, one hundred three million, nine hundred ninety-nine thousand, six hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 36 61 122 183 229 244 366 458 549 687 732 916 1098 1374 2061 2196 2748 4122 8244 13969 27938 41907 45943 55876 83814 91886 125721 137829 167628 183772 251442 275658 413487 502884 551316 826974 1653948 2802523 5605046 8407569 10520947 11210092 16815138 21041894 25222707 31562841 33630276 42083788 50445414 63125682 94688523 100890828 126251364 189377046 378754092 641777767 1283555534 1925333301 2567111068 3850666602 5775999903 7701333204 11551999806 23103999612