8131376432 has 20 divisors (see below), whose sum is σ = 15760047840. Its totient is φ = 4064267328.

The previous prime is 8131376389. The next prime is 8131376443. The reversal of 8131376432 is 2346731318.

It is a super-2 number, since 2×8131376432² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40808 + ... + 133895.

It is an arithmetic number, because the mean of its divisors is an integer number (788002392).

Almost surely, 2^8131376432 is an apocalyptic number.

It is an amenable number.

8131376432 is a deficient number, since it is larger than the sum of its proper divisors (7628671408).

8131376432 is a wasteful number, since it uses less digits than its factorization.

8131376432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177620 (or 177614 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 8131376432 is about 90174.1450306018. The cubic root of 8131376432 is about 2010.8886470999. Note that the first 3 decimals are identical.

The spelling of 8131376432 in words is "eight billion, one hundred thirty-one million, three hundred seventy-six thousand, four hundred thirty-two".