23656145553 has 32 divisors (see below), whose sum is σ = 36285974400. Its totient is φ = 15213780288.

The previous prime is 23656145551. The next prime is 23656145561. The reversal of 23656145553 is 35554165632.

23656145553 is a `hidden beast` number, since 2 + 3 + 6 + 56 + 1 + 45 + 553 = 666.

It is not a de Polignac number, because 23656145553 - 2¹ = 23656145551 is a prime.

It is a super-2 number, since 2×23656145553² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23656145499 and 23656145508.

It is not an unprimeable number, because it can be changed into a prime (23656145551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 937326 + ... + 962232.

It is an arithmetic number, because the mean of its divisors is an integer number (1133936700).

Almost surely, 2^23656145553 is an apocalyptic number.

It is an amenable number.

23656145553 is a deficient number, since it is larger than the sum of its proper divisors (12629828847).

23656145553 is a wasteful number, since it uses less digits than its factorization.

23656145553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26158 (or 26152 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 45.

The spelling of 23656145553 in words is "twenty-three billion, six hundred fifty-six million, one hundred forty-five thousand, five hundred fifty-three".