56399852816 has 20 divisors (see below), whose sum is σ = 110905682832. Its totient is φ = 27779031456.

The previous prime is 56399852813. The next prime is 56399852849. The reversal of 56399852816 is 61825899365.

It is a super-3 number, since 3×56399852816³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (56399852813) 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, 26304830 + ... + 26306973.

Almost surely, 2^56399852816 is an apocalyptic number.

It is an amenable number.

56399852816 is a deficient number, since it is larger than the sum of its proper divisors (54505830016).

56399852816 is a wasteful number, since it uses less digits than its factorization.

56399852816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52611878 (or 52611872 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 62.

The spelling of 56399852816 in words is "fifty-six billion, three hundred ninety-nine million, eight hundred fifty-two thousand, eight hundred sixteen".