56835661440 has 64 divisors (see below), whose sum is σ = 181163676960. Its totient is φ = 15156175872.

The previous prime is 56835661439. The next prime is 56835661447. The reversal of 56835661440 is 4416653865.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×56835661440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 56835661440.

It is not an unprimeable number, because it can be changed into a prime (56835661447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14799034 + ... + 14802873.

Almost surely, 2^56835661440 is an apocalyptic number.

It is an amenable number.

56835661440 is an abundant number, since it is smaller than the sum of its proper divisors (124328015520).

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

56835661440 is a wasteful number, since it uses less digits than its factorization.

56835661440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29601929 (or 29601917 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 56835661440 in words is "fifty-six billion, eight hundred thirty-five million, six hundred sixty-one thousand, four hundred forty".