10656155565 has 48 divisors (see below), whose sum is σ = 20376308160. Its totient is φ = 5108547840.

The previous prime is 10656155561. The next prime is 10656155593. The reversal of 10656155565 is 56555165601.

10656155565 is a `hidden beast` number, since 10 + 65 + 6 + 15 + 5 + 565 = 666.

10656155565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10656155565 - 2² = 10656155561 is a prime.

It is a super-2 number, since 2×10656155565² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 10656155565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10656155561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76887 + ... + 164996.

It is an arithmetic number, because the mean of its divisors is an integer number (424506420).

Almost surely, 2^10656155565 is an apocalyptic number.

10656155565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10656155565 is a deficient number, since it is larger than the sum of its proper divisors (9720152595).

10656155565 is a wasteful number, since it uses less digits than its factorization.

10656155565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241994 (or 241991 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 10656155565 in words is "ten billion, six hundred fifty-six million, one hundred fifty-five thousand, five hundred sixty-five".