15256651219656 has 128 divisors (see below), whose sum is σ = 47647740672000. Its totient is φ = 3954888046080.

The previous prime is 15256651219637. The next prime is 15256651219673. The reversal of 15256651219656 is 65691215665251.

It is a self number, because there is not a number n which added to its sum of digits gives 15256651219656.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7276981 + ... + 9136068.

It is an arithmetic number, because the mean of its divisors is an integer number (372247974000).

Almost surely, 2^{15256651219656} is an apocalyptic number.

It is an amenable number.

15256651219656 is an abundant number, since it is smaller than the sum of its proper divisors (32391089452344).

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

15256651219656 is a wasteful number, since it uses less digits than its factorization.

15256651219656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16413579 (or 16413575 counting only the distinct ones).

The product of its digits is 29160000, while the sum is 60.

The spelling of 15256651219656 in words is "fifteen trillion, two hundred fifty-six billion, six hundred fifty-one million, two hundred nineteen thousand, six hundred fifty-six".