68017697865 has 240 divisors, whose sum is σ = 140213018880. Its totient is φ = 31442411520.

The previous prime is 68017697849. The next prime is 68017697999. The reversal of 68017697865 is 56879671086.

It is not a de Polignac number, because 68017697865 - 2⁴ = 68017697849 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 250987680 + ... + 250987950.

It is an arithmetic number, because the mean of its divisors is an integer number (584220912).

Almost surely, 2^68017697865 is an apocalyptic number.

68017697865 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68017697865 is an abundant number, since it is smaller than the sum of its proper divisors (72195321015).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68017697865 is a wasteful number, since it uses less digits than its factorization.

68017697865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 68017697865 in words is "sixty-eight billion, seventeen million, six hundred ninety-seven thousand, eight hundred sixty-five".