7911685503 has 16 divisors (see below), whose sum is σ = 11748102240. Its totient is φ = 5262268032.

The previous prime is 7911685459. The next prime is 7911685511. The reversal of 7911685503 is 3055861197.

It is a happy number.

7911685503 is a `hidden beast` number, since 7 + 91 + 1 + 6 + 8 + 550 + 3 = 666.

It is not a de Polignac number, because 7911685503 - 2²⁵ = 7878131071 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7911685303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326676 + ... + 350057.

It is an arithmetic number, because the mean of its divisors is an integer number (734256390).

Almost surely, 2^7911685503 is an apocalyptic number.

7911685503 is a deficient number, since it is larger than the sum of its proper divisors (3836416737).

7911685503 is a wasteful number, since it uses less digits than its factorization.

7911685503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677175 (or 677169 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 7911685503 is about 88947.6559724875. The cubic root of 7911685503 is about 1992.6132098370.

The spelling of 7911685503 in words is "seven billion, nine hundred eleven million, six hundred eighty-five thousand, five hundred three".