7708804138685 has 64 divisors (see below), whose sum is σ = 10521528030720. Its totient is φ = 5389960624128.

The previous prime is 7708804138631. The next prime is 7708804138691. The reversal of 7708804138685 is 5868314088077.

It is not a de Polignac number, because 7708804138685 - 2¹⁶ = 7708804073149 is a prime.

It is a super-2 number, since 2×7708804138685² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1013379152 + ... + 1013386758.

It is an arithmetic number, because the mean of its divisors is an integer number (164398875480).

Almost surely, 2^{7708804138685} is an apocalyptic number.

It is an amenable number.

7708804138685 is a deficient number, since it is larger than the sum of its proper divisors (2812723892035).

7708804138685 is a wasteful number, since it uses less digits than its factorization.

7708804138685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9955 (or 9917 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 65.

The spelling of 7708804138685 in words is "seven trillion, seven hundred eight billion, eight hundred four million, one hundred thirty-eight thousand, six hundred eighty-five".