21652614506056 has 16 divisors (see below), whose sum is σ = 40658093866800. Its totient is φ = 10810456141584.

The previous prime is 21652614505969. The next prime is 21652614506059. The reversal of 21652614506056 is 65060541625612.

It is not an unprimeable number, because it can be changed into a prime (21652614506059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1981383126 + ... + 1981394053.

It is an arithmetic number, because the mean of its divisors is an integer number (2541130866675).

Almost surely, 2^{21652614506056} is an apocalyptic number.

It is an amenable number.

21652614506056 is a deficient number, since it is larger than the sum of its proper divisors (19005479360744).

21652614506056 is a wasteful number, since it uses less digits than its factorization.

21652614506056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962777868 (or 3962777864 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 21652614506056 in words is "twenty-one trillion, six hundred fifty-two billion, six hundred fourteen million, five hundred six thousand, fifty-six".