56164658061 has 4 divisors (see below), whose sum is σ = 74886210752. Its totient is φ = 37443105372.

The previous prime is 56164658059. The next prime is 56164658071. The reversal of 56164658061 is 16085646165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56164658061 - 2¹ = 56164658059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56164658061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56164658071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9360776341 + ... + 9360776346.

It is an arithmetic number, because the mean of its divisors is an integer number (18721552688).

Almost surely, 2^56164658061 is an apocalyptic number.

It is an amenable number.

56164658061 is a deficient number, since it is larger than the sum of its proper divisors (18721552691).

56164658061 is a wasteful number, since it uses less digits than its factorization.

56164658061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18721552690.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 56164658061 in words is "fifty-six billion, one hundred sixty-four million, six hundred fifty-eight thousand, sixty-one".