23012556490 has 48 divisors (see below), whose sum is σ = 52565985504. Its totient is φ = 7172743200.

The previous prime is 23012556419. The next prime is 23012556491. The reversal of 23012556490 is 9465521032.

It is a super-2 number, since 2×23012556490² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23012556491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2129356 + ... + 2140135.

It is an arithmetic number, because the mean of its divisors is an integer number (1095124698).

Almost surely, 2^23012556490 is an apocalyptic number.

23012556490 is an abundant number, since it is smaller than the sum of its proper divisors (29553429014).

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

23012556490 is a wasteful number, since it uses less digits than its factorization.

23012556490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4269523 (or 4269516 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 23012556490 in words is "twenty-three billion, twelve million, five hundred fifty-six thousand, four hundred ninety".