23391891828792 has 48 divisors (see below), whose sum is σ = 63353440921680. Its totient is φ = 7797247977600.

The previous prime is 23391891828787. The next prime is 23391891828871. The reversal of 23391891828792 is 29782819819332.

23391891828792 is a `hidden beast` number, since 2 + 3 + 391 + 8 + 91 + 82 + 8 + 79 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 23391891828792.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11492317 + ... + 13373747.

It is an arithmetic number, because the mean of its divisors is an integer number (1319863352535).

Almost surely, 2^{23391891828792} is an apocalyptic number.

It is an amenable number.

23391891828792 is an abundant number, since it is smaller than the sum of its proper divisors (39961549092888).

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

23391891828792 is a wasteful number, since it uses less digits than its factorization.

23391891828792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054124 (or 2054117 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 72.

The spelling of 23391891828792 in words is "twenty-three trillion, three hundred ninety-one billion, eight hundred ninety-one million, eight hundred twenty-eight thousand, seven hundred ninety-two".