21131694674360 has 32 divisors (see below), whose sum is σ = 47546522361360. Its totient is φ = 8452640653056.

The previous prime is 21131694674359. The next prime is 21131694674369. The reversal of 21131694674360 is 6347649613112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131694674369) 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, 9168407 + ... + 11239353.

Almost surely, 2^{21131694674360} is an apocalyptic number.

21131694674360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21131694674360 is an abundant number, since it is smaller than the sum of its proper divisors (26414827687000).

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

21131694674360 is a wasteful number, since it uses less digits than its factorization.

21131694674360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326055 (or 2326051 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 21131694674360 in words is "twenty-one trillion, one hundred thirty-one billion, six hundred ninety-four million, six hundred seventy-four thousand, three hundred sixty".