12961118632 has 32 divisors (see below), whose sum is σ = 30298720320. Its totient is φ = 5049786240.

The previous prime is 12961118591. The next prime is 12961118633. The reversal of 12961118632 is 23681116921.

It is not an unprimeable number, because it can be changed into a prime (12961118633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10519773 + ... + 10521004.

It is an arithmetic number, because the mean of its divisors is an integer number (946835010).

Almost surely, 2^12961118632 is an apocalyptic number.

It is an amenable number.

12961118632 is an abundant number, since it is smaller than the sum of its proper divisors (17337601688).

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

12961118632 is a wasteful number, since it uses less digits than its factorization.

12961118632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21040801 (or 21040797 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The spelling of 12961118632 in words is "twelve billion, nine hundred sixty-one million, one hundred eighteen thousand, six hundred thirty-two".