216923112637125 has 64 divisors (see below), whose sum is σ = 376707453857280. Its totient is φ = 110646513331200.

The previous prime is 216923112637069. The next prime is 216923112637163. The reversal of 216923112637125 is 521736211329612.

It is not a de Polignac number, because 216923112637125 - 2²⁰ = 216923111588549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59084671 + ... + 62648579.

It is an arithmetic number, because the mean of its divisors is an integer number (5886053966520).

Almost surely, 2^{216923112637125} is an apocalyptic number.

216923112637125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216923112637125 is a deficient number, since it is larger than the sum of its proper divisors (159784341220155).

216923112637125 is a wasteful number, since it uses less digits than its factorization.

216923112637125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571007 (or 3570997 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The spelling of 216923112637125 in words is "two hundred sixteen trillion, nine hundred twenty-three billion, one hundred twelve million, six hundred thirty-seven thousand, one hundred twenty-five".