56567656739 has 8 divisors (see below), whose sum is σ = 62453668032. Its totient is φ = 50805561640.

The previous prime is 56567656727. The next prime is 56567656741. The reversal of 56567656739 is 93765676565.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56567656739 is a prime.

It is a super-2 number, since 2×56567656739² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56567656799) 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 7 ways as a sum of consecutive naturals, for example, 30978089 + ... + 30979914.

It is an arithmetic number, because the mean of its divisors is an integer number (7806708504).

Almost surely, 2^56567656739 is an apocalyptic number.

56567656739 is a deficient number, since it is larger than the sum of its proper divisors (5886011293).

56567656739 is a wasteful number, since it uses less digits than its factorization.

56567656739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61958097.

The product of its digits is 214326000, while the sum is 65.

The spelling of 56567656739 in words is "fifty-six billion, five hundred sixty-seven million, six hundred fifty-six thousand, seven hundred thirty-nine".