20814832565736 has 64 divisors (see below), whose sum is σ = 56768856073920. Its totient is φ = 6307399365120.

The previous prime is 20814832565717. The next prime is 20814832565743. The reversal of 20814832565736 is 63756523841802.

It is a super-2 number, since 2×20814832565736² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20814832565736.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12945646 + ... + 14464418.

It is an arithmetic number, because the mean of its divisors is an integer number (887013376155).

Almost surely, 2^{20814832565736} is an apocalyptic number.

It is an amenable number.

20814832565736 is an abundant number, since it is smaller than the sum of its proper divisors (35954023508184).

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

20814832565736 is a wasteful number, since it uses less digits than its factorization.

20814832565736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570706 (or 1570702 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 60.

The spelling of 20814832565736 in words is "twenty trillion, eight hundred fourteen billion, eight hundred thirty-two million, five hundred sixty-five thousand, seven hundred thirty-six".