23218166272 has 60 divisors (see below), whose sum is σ = 53965081170. Its totient is φ = 9950631936.

The previous prime is 23218166249. The next prime is 23218166287. The reversal of 23218166272 is 27266181232.

It can be written as a sum of positive squares in only one way, i.e., 11729756416 + 11488409856 = 108304^2 + 107184^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437647 + ... + 487822.

Almost surely, 2^23218166272 is an apocalyptic number.

It is an amenable number.

23218166272 is an abundant number, since it is smaller than the sum of its proper divisors (30746914898).

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

23218166272 is an frugal number, since it uses more digits than its factorization.

23218166272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925501 (or 925478 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The spelling of 23218166272 in words is "twenty-three billion, two hundred eighteen million, one hundred sixty-six thousand, two hundred seventy-two".