56278104961 has 16 divisors (see below), whose sum is σ = 63880079760. Its totient is φ = 49211285760.

The previous prime is 56278104943. The next prime is 56278104997. The reversal of 56278104961 is 16940187265.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4785872400 + 51492232561 = 69180^2 + 226919^2 .

It is not a de Polignac number, because 56278104961 - 2⁷ = 56278104833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56278104361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1388310 + ... + 1428271.

It is an arithmetic number, because the mean of its divisors is an integer number (3992504985).

Almost surely, 2^56278104961 is an apocalyptic number.

It is an amenable number.

56278104961 is a deficient number, since it is larger than the sum of its proper divisors (7601974799).

56278104961 is a wasteful number, since it uses less digits than its factorization.

56278104961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816676.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 56278104961 in words is "fifty-six billion, two hundred seventy-eight million, one hundred four thousand, nine hundred sixty-one".