56651565061 has 48 divisors (see below), whose sum is σ = 75392486400. Its totient is φ = 42073540992.

The previous prime is 56651565059. The next prime is 56651565067. The reversal of 56651565061 is 16056515665.

It is not a de Polignac number, because 56651565061 - 2¹ = 56651565059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56651565067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1297756 + ... + 1340698.

It is an arithmetic number, because the mean of its divisors is an integer number (1570676800).

Almost surely, 2^56651565061 is an apocalyptic number.

It is an amenable number.

56651565061 is a deficient number, since it is larger than the sum of its proper divisors (18740921339).

56651565061 is a wasteful number, since it uses less digits than its factorization.

56651565061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43098 (or 43091 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 56651565061 in words is "fifty-six billion, six hundred fifty-one million, five hundred sixty-five thousand, sixty-one".