11975269631 has 64 divisors (see below), whose sum is σ = 14529715200. Its totient is φ = 9763421184.

The previous prime is 11975269609. The next prime is 11975269643. The reversal of 11975269631 is 13696257911.

It is a cyclic number.

It is not a de Polignac number, because 11975269631 - 2¹⁰ = 11975268607 is a prime.

It is a super-2 number, since 2×11975269631² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11975269631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11975269601) 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 63 ways as a sum of consecutive naturals, for example, 51395891 + ... + 51396123.

It is an arithmetic number, because the mean of its divisors is an integer number (227026800).

Almost surely, 2^11975269631 is an apocalyptic number.

11975269631 is a deficient number, since it is larger than the sum of its proper divisors (2554445569).

11975269631 is a wasteful number, since it uses less digits than its factorization.

11975269631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480.

The product of its digits is 612360, while the sum is 50.

The spelling of 11975269631 in words is "eleven billion, nine hundred seventy-five million, two hundred sixty-nine thousand, six hundred thirty-one".