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68379739452 = 223216311652989
BaseRepresentation
bin111111101011110000…
…000000010100111100
320112111111112200020200
4333223300000110330
52110020203130302
651225131043500
74640341123653
oct775360002474
9215444480220
1068379739452
1126aaa642372
12113042a0590
1365a98699bb
14344976a19a
151ba325d81c
hexfebc0053c

68379739452 has 36 divisors (see below), whose sum is σ = 173909222760. Its totient is φ = 22653408672.

The previous prime is 68379739447. The next prime is 68379739459. The reversal of 68379739452 is 25493797386.

68379739452 is a `hidden beast` number, since 6 + 83 + 79 + 7 + 39 + 452 = 666.

68379739452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 68379739452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68379739459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5820627 + ... + 5832362.

Almost surely, 268379739452 is an apocalyptic number.

It is an amenable number.

68379739452 is an abundant number, since it is smaller than the sum of its proper divisors (105529483308).

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

68379739452 is a wasteful number, since it uses less digits than its factorization.

68379739452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11653162 (or 11653157 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 68379739452 in words is "sixty-eight billion, three hundred seventy-nine million, seven hundred thirty-nine thousand, four hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 163 326 489 652 978 1467 1956 2934 5868 11652989 23305978 34958967 46611956 69917934 104876901 139835868 209753802 419507604 1899437207 3798874414 5698311621 7597748828 11396623242 17094934863 22793246484 34189869726 68379739452