68821326685 has 32 divisors (see below), whose sum is σ = 86668600320. Its totient is φ = 52363238400.

The previous prime is 68821326671. The next prime is 68821326697. The reversal of 68821326685 is 58662312886.

It is not a de Polignac number, because 68821326685 - 2¹⁵ = 68821293917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17730945 + ... + 17734825.

It is an arithmetic number, because the mean of its divisors is an integer number (2708393760).

Almost surely, 2^68821326685 is an apocalyptic number.

It is an amenable number.

68821326685 is a deficient number, since it is larger than the sum of its proper divisors (17847273635).

68821326685 is a wasteful number, since it uses less digits than its factorization.

68821326685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749.

The product of its digits is 6635520, while the sum is 55.

The spelling of 68821326685 in words is "sixty-eight billion, eight hundred twenty-one million, three hundred twenty-six thousand, six hundred eighty-five".