56906945961 has 16 divisors (see below), whose sum is σ = 79881584640. Its totient is φ = 35935745040.

The previous prime is 56906945941. The next prime is 56906945981. The reversal of 56906945961 is 16954960965.

It is an interprime number because it is at equal distance from previous prime (56906945941) and next prime (56906945981).

It is not a de Polignac number, because 56906945961 - 2¹⁰ = 56906944937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56906945895 and 56906945904.

It is not an unprimeable number, because it can be changed into a prime (56906945941) 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, 318456 + ... + 463926.

It is an arithmetic number, because the mean of its divisors is an integer number (4992599040).

Almost surely, 2^56906945961 is an apocalyptic number.

It is an amenable number.

56906945961 is a deficient number, since it is larger than the sum of its proper divisors (22974638679).

56906945961 is a wasteful number, since it uses less digits than its factorization.

56906945961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152356.

The product of its (nonzero) digits is 15746400, while the sum is 60.

The spelling of 56906945961 in words is "fifty-six billion, nine hundred six million, nine hundred forty-five thousand, nine hundred sixty-one".