20631794194720 has 96 divisors (see below), whose sum is σ = 48816493701696. Its totient is φ = 8240214758400.

The previous prime is 20631794194699. The next prime is 20631794194721. The reversal of 20631794194720 is 2749149713602.

It is not an unprimeable number, because it can be changed into a prime (20631794194721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503059015 + ... + 503100025.

It is an arithmetic number, because the mean of its divisors is an integer number (508505142726).

Almost surely, 2^{20631794194720} is an apocalyptic number.

20631794194720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20631794194720 is an abundant number, since it is smaller than the sum of its proper divisors (28184699506976).

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

20631794194720 is a wasteful number, since it uses less digits than its factorization.

20631794194720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45714 (or 45706 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 20631794194720 in words is "twenty trillion, six hundred thirty-one billion, seven hundred ninety-four million, one hundred ninety-four thousand, seven hundred twenty".