23012556489 has 32 divisors (see below), whose sum is σ = 36750134400. Its totient is φ = 14148095040.

The previous prime is 23012556419. The next prime is 23012556491. The reversal of 23012556489 is 98465521032.

23012556489 is a `hidden beast` number, since 2 + 3 + 0 + 1 + 2 + 5 + 564 + 89 = 666.

It is not a de Polignac number, because 23012556489 - 2¹⁶ = 23012490953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23012556409) 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, 344554 + ... + 405884.

It is an arithmetic number, because the mean of its divisors is an integer number (1148441700).

Almost surely, 2^23012556489 is an apocalyptic number.

It is an amenable number.

23012556489 is a deficient number, since it is larger than the sum of its proper divisors (13737577911).

23012556489 is a wasteful number, since it uses less digits than its factorization.

23012556489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62422 (or 62416 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 23012556489 in words is "twenty-three billion, twelve million, five hundred fifty-six thousand, four hundred eighty-nine".