15765643012 has 12 divisors (see below), whose sum is σ = 31531286080. Its totient is φ = 6756704136.

The previous prime is 15765643007. The next prime is 15765643021. The reversal of 15765643012 is 21034656751.

15765643012 is an admirable number.

It is a super-3 number, since 3×15765643012³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281529312 + ... + 281529367.

Almost surely, 2^15765643012 is an apocalyptic number.

It is an amenable number.

15765643012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15765643012 is a wasteful number, since it uses less digits than its factorization.

15765643012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563058690 (or 563058688 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 15765643012 in words is "fifteen billion, seven hundred sixty-five million, six hundred forty-three thousand, twelve".