23978455212 has 24 divisors (see below), whose sum is σ = 55952277696. Its totient is φ = 7992454288.

The previous prime is 23978455187. The next prime is 23978455217. The reversal of 23978455212 is 21255487932.

It is not an unprimeable number, because it can be changed into a prime (23978455217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416323 + ... + 470405.

It is an arithmetic number, because the mean of its divisors is an integer number (2331344904).

Almost surely, 2^23978455212 is an apocalyptic number.

It is an amenable number.

23978455212 is an abundant number, since it is smaller than the sum of its proper divisors (31973822484).

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

23978455212 is a wasteful number, since it uses less digits than its factorization.

23978455212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91037 (or 91035 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The spelling of 23978455212 in words is "twenty-three billion, nine hundred seventy-eight million, four hundred fifty-five thousand, two hundred twelve".