21694471586016 has 48 divisors (see below), whose sum is σ = 58911711642000. Its totient is φ = 6982128785408.

The previous prime is 21694471585993. The next prime is 21694471586033. The reversal of 21694471586016 is 61068517449612.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 3896274441 + ... + 3896280008.

It is an arithmetic number, because the mean of its divisors is an integer number (1227327325875).

Almost surely, 2^{21694471586016} is an apocalyptic number.

It is an amenable number.

21694471586016 is an abundant number, since it is smaller than the sum of its proper divisors (37217240055984).

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

21694471586016 is a wasteful number, since it uses less digits than its factorization.

21694471586016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792554491 (or 7792554483 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 21694471586016 in words is "twenty-one trillion, six hundred ninety-four billion, four hundred seventy-one million, five hundred eighty-six thousand, sixteen".