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12863751888 = 2431320614987
BaseRepresentation
bin10111111101011110…
…10100011011010000
31020012111102022012010
423332233110123100
5202321110030023
65524242502520
7633530041551
oct137657243320
936174368163
1012863751888
115501286209
1225b0064a40
1312a00a9310
148a0620328
155044dc093
hex2febd46d0

12863751888 has 40 divisors (see below), whose sum is σ = 35787619168. Its totient is φ = 3958077312.

The previous prime is 12863751883. The next prime is 12863751889. The reversal of 12863751888 is 88815736821.

It is a super-2 number, since 2×128637518882 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12863751883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10306870 + ... + 10308117.

Almost surely, 212863751888 is an apocalyptic number.

It is an amenable number.

12863751888 is an abundant number, since it is smaller than the sum of its proper divisors (22923867280).

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

12863751888 is a wasteful number, since it uses less digits than its factorization.

12863751888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20615011 (or 20615005 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 57.

The spelling of 12863751888 in words is "twelve billion, eight hundred sixty-three million, seven hundred fifty-one thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 39 48 52 78 104 156 208 312 624 20614987 41229974 61844961 82459948 123689922 164919896 247379844 267994831 329839792 494759688 535989662 803984493 989519376 1071979324 1607968986 2143958648 3215937972 4287917296 6431875944 12863751888