21696956060 has 24 divisors (see below), whose sum is σ = 49068501216. Its totient is φ = 8011183680.

The previous prime is 21696956053. The next prime is 21696956081. The reversal of 21696956060 is 6065969612.

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, 41724656 + ... + 41725175.

It is an arithmetic number, because the mean of its divisors is an integer number (2044520884).

Almost surely, 2^21696956060 is an apocalyptic number.

21696956060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21696956060 is an abundant number, since it is smaller than the sum of its proper divisors (27371545156).

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

21696956060 is a wasteful number, since it uses less digits than its factorization.

21696956060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83449853 (or 83449851 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 21696956060 in words is "twenty-one billion, six hundred ninety-six million, nine hundred fifty-six thousand, sixty".