56507641289 has 16 divisors (see below), whose sum is σ = 61981174080. Its totient is φ = 51090855360.

The previous prime is 56507641271. The next prime is 56507641303. The reversal of 56507641289 is 98214670565.

It is a cyclic number.

It is not a de Polignac number, because 56507641289 - 2⁸ = 56507641033 is a prime.

It is a super-2 number, since 2×56507641289² (a number of 22 digits) contains 22 as substring.

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 56507641289.

It is not an unprimeable number, because it can be changed into a prime (56507641789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720667 + ... + 1753199.

It is an arithmetic number, because the mean of its divisors is an integer number (3873823380).

Almost surely, 2^56507641289 is an apocalyptic number.

It is an amenable number.

56507641289 is a deficient number, since it is larger than the sum of its proper divisors (5473532791).

56507641289 is a wasteful number, since it uses less digits than its factorization.

56507641289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33400.

The product of its (nonzero) digits is 3628800, while the sum is 53.

It can be divided in two parts, 56507 and 641289, that added together give a palindrome (697796).

The spelling of 56507641289 in words is "fifty-six billion, five hundred seven million, six hundred forty-one thousand, two hundred eighty-nine".