56881706465 has 8 divisors (see below), whose sum is σ = 68961739560. Its totient is φ = 45036237312.

The previous prime is 56881706419. The next prime is 56881706471. The reversal of 56881706465 is 56460718865.

It can be written as a sum of positive squares in 4 ways, for example, as 51437584 + 56830268881 = 7172^2 + 238391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56881706465 - 2³² = 52586739169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56881706465.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58640450 + ... + 58641419.

It is an arithmetic number, because the mean of its divisors is an integer number (8620217445).

Almost surely, 2^56881706465 is an apocalyptic number.

It is an amenable number.

56881706465 is a deficient number, since it is larger than the sum of its proper divisors (12080033095).

56881706465 is a wasteful number, since it uses less digits than its factorization.

56881706465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117281971.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 56881706465 in words is "fifty-six billion, eight hundred eighty-one million, seven hundred six thousand, four hundred sixty-five".