21932291064 has 32 divisors (see below), whose sum is σ = 54868551120. Its totient is φ = 7305720576.

The previous prime is 21932291047. The next prime is 21932291131. The reversal of 21932291064 is 46019223912.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279597 + ... + 349340.

Almost surely, 2^21932291064 is an apocalyptic number.

21932291064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21932291064 is an abundant number, since it is smaller than the sum of its proper divisors (32936260056).

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

21932291064 is a wasteful number, since it uses less digits than its factorization.

21932291064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630399 (or 630395 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 21932291064 in words is "twenty-one billion, nine hundred thirty-two million, two hundred ninety-one thousand, sixty-four".