68635677653686 has 64 divisors (see below), whose sum is σ = 128356323895296. Its totient is φ = 27042991372800.

The previous prime is 68635677653617. The next prime is 68635677653687.

68635677653686 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68635677653687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13779270 + ... + 18087001.

It is an arithmetic number, because the mean of its divisors is an integer number (2005567560864).

Almost surely, 2^{68635677653686} is an apocalyptic number.

68635677653686 is a deficient number, since it is larger than the sum of its proper divisors (59720646241610).

68635677653686 is a wasteful number, since it uses less digits than its factorization.

68635677653686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31866757.

The product of its digits is 32920473600, while the sum is 82.

The spelling of 68635677653686 in words is "sixty-eight trillion, six hundred thirty-five billion, six hundred seventy-seven million, six hundred fifty-three thousand, six hundred eighty-six".