68128367615 has 16 divisors (see below), whose sum is σ = 101927116800. Its totient is φ = 42469631520.

The previous prime is 68128367591. The next prime is 68128367633. The reversal of 68128367615 is 51676382186.

It is not a de Polignac number, because 68128367615 - 2²⁶ = 68061258751 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88478015 + ... + 88478784.

It is an arithmetic number, because the mean of its divisors is an integer number (6370444800).

Almost surely, 2^68128367615 is an apocalyptic number.

68128367615 is a deficient number, since it is larger than the sum of its proper divisors (33798749185).

68128367615 is a wasteful number, since it uses less digits than its factorization.

68128367615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176956822.

The product of its digits is 2903040, while the sum is 53.

The spelling of 68128367615 in words is "sixty-eight billion, one hundred twenty-eight million, three hundred sixty-seven thousand, six hundred fifteen".