56091402881 has 32 divisors (see below), whose sum is σ = 62341693440. Its totient is φ = 50227936704.

The previous prime is 56091402853. The next prime is 56091402901. The reversal of 56091402881 is 18820419065.

It is not a de Polignac number, because 56091402881 - 2⁶ = 56091402817 is a prime.

It is a super-2 number, since 2×56091402881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56091402181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27320651 + ... + 27322703.

It is an arithmetic number, because the mean of its divisors is an integer number (1948177920).

Almost surely, 2^56091402881 is an apocalyptic number.

It is an amenable number.

56091402881 is a deficient number, since it is larger than the sum of its proper divisors (6250290559).

56091402881 is a wasteful number, since it uses less digits than its factorization.

56091402881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 56091402881 in words is "fifty-six billion, ninety-one million, four hundred two thousand, eight hundred eighty-one".