8640091975 has 12 divisors (see below), whose sum is σ = 10723041856. Its totient is φ = 6906055680.

The previous prime is 8640091931. The next prime is 8640091997. The reversal of 8640091975 is 5791900468.

It is a de Polignac number, because none of the positive numbers 2^k-8640091975 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121047 + ... + 178696.

Almost surely, 2^8640091975 is an apocalyptic number.

8640091975 is a deficient number, since it is larger than the sum of its proper divisors (2082949881).

8640091975 is a wasteful number, since it uses less digits than its factorization.

8640091975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300906 (or 300901 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 8640091975 is about 92952.0950543881. The cubic root of 8640091975 is about 2051.9784172379.

The spelling of 8640091975 in words is "eight billion, six hundred forty million, ninety-one thousand, nine hundred seventy-five".