21761363374120 has 32 divisors (see below), whose sum is σ = 49022705994120. Its totient is φ = 8693942967040.

The previous prime is 21761363374117. The next prime is 21761363374141. The reversal of 21761363374120 is 2147336316712.

It can be written as a sum of positive squares in 4 ways, for example, as 9447398090244 + 12313965283876 = 3073662^2 + 3509126^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331291207 + ... + 331356886.

Almost surely, 2^{21761363374120} is an apocalyptic number.

21761363374120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21761363374120 is an abundant number, since it is smaller than the sum of its proper divisors (27261342620000).

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

21761363374120 is a wasteful number, since it uses less digits than its factorization.

21761363374120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662648925 (or 662648921 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 21761363374120 in words is "twenty-one trillion, seven hundred sixty-one billion, three hundred sixty-three million, three hundred seventy-four thousand, one hundred twenty".