23421571664 has 20 divisors (see below), whose sum is σ = 46344813504. Its totient is φ = 11461619808.

The previous prime is 23421571637. The next prime is 23421571717. The reversal of 23421571664 is 46617512432.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15572102 + ... + 15573605.

Almost surely, 2^23421571664 is an apocalyptic number.

It is an amenable number.

23421571664 is a deficient number, since it is larger than the sum of its proper divisors (22923241840).

23421571664 is a wasteful number, since it uses less digits than its factorization.

23421571664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31145762 (or 31145756 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The spelling of 23421571664 in words is "twenty-three billion, four hundred twenty-one million, five hundred seventy-one thousand, six hundred sixty-four".