20152085656 has 16 divisors (see below), whose sum is σ = 37787525640. Its totient is φ = 10075412160.

The previous prime is 20152085623. The next prime is 20152085677. The reversal of 20152085656 is 65658025102.

It is a super-2 number, since 2×20152085656² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 74515 + ... + 214141.

Almost surely, 2^20152085656 is an apocalyptic number.

It is an amenable number.

20152085656 is a deficient number, since it is larger than the sum of its proper divisors (17635439984).

20152085656 is a wasteful number, since it uses less digits than its factorization.

20152085656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157674 (or 157670 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 20152085656 in words is "twenty billion, one hundred fifty-two million, eighty-five thousand, six hundred fifty-six".