21000093832917 has 64 divisors (see below), whose sum is σ = 32235356160000. Its totient is φ = 13497673464000.

The previous prime is 21000093832897. The next prime is 21000093832973. The reversal of 21000093832917 is 71923839000012.

It is not a de Polignac number, because 21000093832917 - 2²⁴ = 21000077055701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000093832997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 336190834 + ... + 336253292.

It is an arithmetic number, because the mean of its divisors is an integer number (503677440000).

Almost surely, 2^{21000093832917} is an apocalyptic number.

21000093832917 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

21000093832917 is a deficient number, since it is larger than the sum of its proper divisors (11235262327083).

21000093832917 is a wasteful number, since it uses less digits than its factorization.

21000093832917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63999 (or 63993 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 21000093832917 in words is "twenty-one trillion, ninety-three million, eight hundred thirty-two thousand, nine hundred seventeen".