21107324264 has 32 divisors (see below), whose sum is σ = 42631680000. Its totient is φ = 9739300032.

The previous prime is 21107324261. The next prime is 21107324269. The reversal of 21107324264 is 46242370112.

It is a self number, because there is not a number n which added to its sum of digits gives 21107324264.

It is not an unprimeable number, because it can be changed into a prime (21107324261) 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, 408137 + ... + 456935.

It is an arithmetic number, because the mean of its divisors is an integer number (1332240000).

Almost surely, 2^21107324264 is an apocalyptic number.

It is an amenable number.

21107324264 is an abundant number, since it is smaller than the sum of its proper divisors (21524355736).

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

21107324264 is a wasteful number, since it uses less digits than its factorization.

21107324264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52977 (or 52973 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 21107324264 its reverse (46242370112), we get a palindrome (67349694376).

The spelling of 21107324264 in words is "twenty-one billion, one hundred seven million, three hundred twenty-four thousand, two hundred sixty-four".