11975622372 has 144 divisors (see below), whose sum is σ = 35414346240. Its totient is φ = 3341039616.

The previous prime is 11975622371. The next prime is 11975622433. The reversal of 11975622372 is 27322657911.

It is a happy number.

11975622372 is a `hidden beast` number, since 1 + 19 + 7 + 5 + 622 + 3 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (11975622371) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6738348 + ... + 6740124.

It is an arithmetic number, because the mean of its divisors is an integer number (245932960).

Almost surely, 2^11975622372 is an apocalyptic number.

11975622372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11975622372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17707173120).

11975622372 is an abundant number, since it is smaller than the sum of its proper divisors (23438723868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11975622372 is a wasteful number, since it uses less digits than its factorization.

11975622372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410 (or 2405 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 11975622372 in words is "eleven billion, nine hundred seventy-five million, six hundred twenty-two thousand, three hundred seventy-two".