56720420433764 has 12 divisors (see below), whose sum is σ = 99260927083500. Its totient is φ = 28360155552768.

The previous prime is 56720420433763. The next prime is 56720420433959. The reversal of 56720420433764 is 46733402402765.

It can be written as a sum of positive squares in 2 ways, for example, as 26575489040164 + 30144931393600 = 5155142^2 + 5490440^2 .

It is a super-2 number, since 2×56720420433764² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56720420433763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11285309 + ... + 15517700.

It is an arithmetic number, because the mean of its divisors is an integer number (8271743923625).

Almost surely, 2^{56720420433764} is an apocalyptic number.

It is an amenable number.

56720420433764 is a deficient number, since it is larger than the sum of its proper divisors (42540506649736).

56720420433764 is a wasteful number, since it uses less digits than its factorization.

56720420433764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27332062 (or 27332060 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 53.

The spelling of 56720420433764 in words is "fifty-six trillion, seven hundred twenty billion, four hundred twenty million, four hundred thirty-three thousand, seven hundred sixty-four".