68808177685 has 16 divisors (see below), whose sum is σ = 91789770240. Its totient is φ = 49173088320.

The previous prime is 68808177661. The next prime is 68808177701. The reversal of 68808177685 is 58677180886.

It is not a de Polignac number, because 68808177685 - 2²¹ = 68806080533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17071975 + ... + 17076004.

It is an arithmetic number, because the mean of its divisors is an integer number (5736860640).

Almost surely, 2^68808177685 is an apocalyptic number.

68808177685 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68808177685 is a deficient number, since it is larger than the sum of its proper divisors (22981592555).

68808177685 is a wasteful number, since it uses less digits than its factorization.

68808177685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34148028.

The product of its (nonzero) digits is 36126720, while the sum is 64.

The spelling of 68808177685 in words is "sixty-eight billion, eight hundred eight million, one hundred seventy-seven thousand, six hundred eighty-five".