56961506805 has 32 divisors (see below), whose sum is σ = 104340707328. Its totient is φ = 25993915200.

The previous prime is 56961506801. The next prime is 56961506827. The reversal of 56961506805 is 50860516965.

It is a happy number.

It is not a de Polignac number, because 56961506805 - 2² = 56961506801 is a prime.

It is a super-2 number, since 2×56961506805² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56961506801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 415081 + ... + 534990.

It is an arithmetic number, because the mean of its divisors is an integer number (3260647104).

Almost surely, 2^56961506805 is an apocalyptic number.

It is an amenable number.

56961506805 is a deficient number, since it is larger than the sum of its proper divisors (47379200523).

56961506805 is a wasteful number, since it uses less digits than its factorization.

56961506805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950657.

The product of its (nonzero) digits is 1944000, while the sum is 51.

The spelling of 56961506805 in words is "fifty-six billion, nine hundred sixty-one million, five hundred six thousand, eight hundred five".