11943979632 has 160 divisors (see below), whose sum is σ = 36971592000. Its totient is φ = 3670023168.

The previous prime is 11943979591. The next prime is 11943979639. The reversal of 11943979632 is 23697934911.

It is a happy number.

11943979632 is a `hidden beast` number, since 1 + 194 + 397 + 9 + 63 + 2 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11943979639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7709994 + ... + 7711542.

It is an arithmetic number, because the mean of its divisors is an integer number (231072450).

Almost surely, 2^11943979632 is an apocalyptic number.

11943979632 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 11943979632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18485796000).

11943979632 is an abundant number, since it is smaller than the sum of its proper divisors (25027612368).

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

11943979632 is a wasteful number, since it uses less digits than its factorization.

11943979632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952 (or 2940 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The spelling of 11943979632 in words is "eleven billion, nine hundred forty-three million, nine hundred seventy-nine thousand, six hundred thirty-two".