20013656764450 has 24 divisors (see below), whose sum is σ = 38017431407232. Its totient is φ = 7835133711120.

The previous prime is 20013656764427. The next prime is 20013656764459. The reversal of 20013656764450 is 5446765631002.

It is a junction number, because it is equal to n+sod(n) for n = 20013656764394 and 20013656764403.

It is not an unprimeable number, because it can be changed into a prime (20013656764459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4258222494 + ... + 4258227193.

It is an arithmetic number, because the mean of its divisors is an integer number (1584059641968).

Almost surely, 2^{20013656764450} is an apocalyptic number.

20013656764450 is a deficient number, since it is larger than the sum of its proper divisors (18003774642782).

20013656764450 is a wasteful number, since it uses less digits than its factorization.

20013656764450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8516449746 (or 8516449741 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 20013656764450 in words is "twenty trillion, thirteen billion, six hundred fifty-six million, seven hundred sixty-four thousand, four hundred fifty".