56531291067 has 16 divisors (see below), whose sum is σ = 83824682880. Its totient is φ = 37653947496.

The previous prime is 56531291059. The next prime is 56531291093. The reversal of 56531291067 is 76019213565.

56531291067 is a `hidden beast` number, since 5 + 6 + 531 + 2 + 9 + 106 + 7 = 666.

It is not a de Polignac number, because 56531291067 - 2³ = 56531291059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56531291567) 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 15 ways as a sum of consecutive naturals, for example, 901893 + ... + 962534.

It is an arithmetic number, because the mean of its divisors is an integer number (5239042680).

Almost surely, 2^56531291067 is an apocalyptic number.

56531291067 is a deficient number, since it is larger than the sum of its proper divisors (27293391813).

56531291067 is a wasteful number, since it uses less digits than its factorization.

56531291067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865559 (or 1865553 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 56531291067 in words is "fifty-six billion, five hundred thirty-one million, two hundred ninety-one thousand, sixty-seven".