68104791138688 has 16 divisors (see below), whose sum is σ = 135677513596860. Its totient is φ = 34052395569280.

The previous prime is 68104791138673. The next prime is 68104791138701. The reversal of 68104791138688 is 88683119740186.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×68104791138688² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266034340258 + ... + 266034340513.

Almost surely, 2^{68104791138688} is an apocalyptic number.

It is an amenable number.

68104791138688 is a deficient number, since it is larger than the sum of its proper divisors (67572722458172).

68104791138688 is an equidigital number, since it uses as much as digits as its factorization.

68104791138688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532068680785 (or 532068680773 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 70.

The spelling of 68104791138688 in words is "sixty-eight trillion, one hundred four billion, seven hundred ninety-one million, one hundred thirty-eight thousand, six hundred eighty-eight".