20403024363656 has 64 divisors (see below), whose sum is σ = 43344547243200. Its totient is φ = 8918630560000.

The previous prime is 20403024363641. The next prime is 20403024363661. The reversal of 20403024363656 is 65636342030402.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 15285575 + ... + 16566678.

It is an arithmetic number, because the mean of its divisors is an integer number (677258550675).

Almost surely, 2^{20403024363656} is an apocalyptic number.

It is an amenable number.

20403024363656 is an abundant number, since it is smaller than the sum of its proper divisors (22941522879544).

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

20403024363656 is a wasteful number, since it uses less digits than its factorization.

20403024363656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31852550 (or 31852546 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 44.

The spelling of 20403024363656 in words is "twenty trillion, four hundred three billion, twenty-four million, three hundred sixty-three thousand, six hundred fifty-six".