20727615745968 has 40 divisors (see below), whose sum is σ = 53611561656816. Its totient is φ = 6900789638400.

The previous prime is 20727615745957. The next prime is 20727615745997. The reversal of 20727615745968 is 86954751672702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262948003 + ... + 263026818.

Almost surely, 2^{20727615745968} is an apocalyptic number.

It is an amenable number.

20727615745968 is an abundant number, since it is smaller than the sum of its proper divisors (32883945910848).

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

20727615745968 is a wasteful number, since it uses less digits than its factorization.

20727615745968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525975653 (or 525975647 counting only the distinct ones).

The product of its (nonzero) digits is 355622400, while the sum is 69.

The spelling of 20727615745968 in words is "twenty trillion, seven hundred twenty-seven billion, six hundred fifteen million, seven hundred forty-five thousand, nine hundred sixty-eight".