8376131991605 has 128 divisors (see below), whose sum is σ = 12309268156416. Its totient is φ = 5341328179200.

The previous prime is 8376131991569. The next prime is 8376131991631. The reversal of 8376131991605 is 5061991316738.

It is not a de Polignac number, because 8376131991605 - 2²⁶ = 8376064882741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19344415469 + ... + 19344415901.

It is an arithmetic number, because the mean of its divisors is an integer number (96166157472).

Almost surely, 2^{8376131991605} is an apocalyptic number.

8376131991605 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8376131991605 is a deficient number, since it is larger than the sum of its proper divisors (3933136164811).

8376131991605 is a wasteful number, since it uses less digits than its factorization.

8376131991605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 8376131991605 in words is "eight trillion, three hundred seventy-six billion, one hundred thirty-one million, nine hundred ninety-one thousand, six hundred five".