23578864820 has 24 divisors (see below), whose sum is σ = 56589275904. Its totient is φ = 8084182176.

The previous prime is 23578864817. The next prime is 23578864823. The reversal of 23578864820 is 2846887532.

It is an interprime number because it is at equal distance from previous prime (23578864817) and next prime (23578864823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23578864823) 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, 84210092 + ... + 84210371.

It is an arithmetic number, because the mean of its divisors is an integer number (2357886496).

Almost surely, 2^23578864820 is an apocalyptic number.

23578864820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23578864820 is an abundant number, since it is smaller than the sum of its proper divisors (33010411084).

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

23578864820 is a wasteful number, since it uses less digits than its factorization.

23578864820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168420479 (or 168420477 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 53.

The spelling of 23578864820 in words is "twenty-three billion, five hundred seventy-eight million, eight hundred sixty-four thousand, eight hundred twenty".