23213487906544 has 20 divisors (see below), whose sum is σ = 48435835343896. Its totient is φ = 10713917495232.

The previous prime is 23213487906509. The next prime is 23213487906551. The reversal of 23213487906544 is 44560978431232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55801653414 + ... + 55801653829.

It is a 2-persistent number, because it is pandigital, and so is 2⋅23213487906544 = 46426975813088, but 3⋅23213487906544 = 69640463719632 is not.

Almost surely, 2^{23213487906544} is an apocalyptic number.

It is an amenable number.

23213487906544 is an abundant number, since it is smaller than the sum of its proper divisors (25222347437352).

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

23213487906544 is a wasteful number, since it uses less digits than its factorization.

23213487906544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111603307264 (or 111603307258 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 58.

The spelling of 23213487906544 in words is "twenty-three trillion, two hundred thirteen billion, four hundred eighty-seven million, nine hundred six thousand, five hundred forty-four".