11971417632 has 24 divisors (see below), whose sum is σ = 31424971536. Its totient is φ = 3990472512.

The previous prime is 11971417631. The next prime is 11971417639. The reversal of 11971417632 is 23671417911.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (11971417631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62351038 + ... + 62351229.

It is an arithmetic number, because the mean of its divisors is an integer number (1309373814).

Almost surely, 2^11971417632 is an apocalyptic number.

11971417632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11971417632 is an abundant number, since it is smaller than the sum of its proper divisors (19453553904).

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

11971417632 is a wasteful number, since it uses less digits than its factorization.

11971417632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124702280 (or 124702272 counting only the distinct ones).

The product of its digits is 63504, while the sum is 42.

The spelling of 11971417632 in words is "eleven billion, nine hundred seventy-one million, four hundred seventeen thousand, six hundred thirty-two".