11921375232 has 300 divisors, whose sum is σ = 38411050216. Its totient is φ = 3662807040.

The previous prime is 11921375197. The next prime is 11921375233. The reversal of 11921375232 is 23257312911.

It is a happy number.

11921375232 is a `hidden beast` number, since 11 + 92 + 1 + 37 + 523 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11921375233) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17252007 + ... + 17252697.

Almost surely, 2^11921375232 is an apocalyptic number.

11921375232 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 11921375232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19205525108).

11921375232 is an abundant number, since it is smaller than the sum of its proper divisors (26489674984).

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

11921375232 is an frugal number, since it uses more digits than its factorization.

11921375232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 709 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The spelling of 11921375232 in words is "eleven billion, nine hundred twenty-one million, three hundred seventy-five thousand, two hundred thirty-two".