68125864055 has 4 divisors (see below), whose sum is σ = 81751036872. Its totient is φ = 54500691240.

The previous prime is 68125864019. The next prime is 68125864063. The reversal of 68125864055 is 55046852186.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-68125864055 is a prime.

It is a super-3 number, since 3×68125864055³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68125863994 and 68125864012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6812586401 + ... + 6812586410.

It is an arithmetic number, because the mean of its divisors is an integer number (20437759218).

Almost surely, 2^68125864055 is an apocalyptic number.

68125864055 is a deficient number, since it is larger than the sum of its proper divisors (13625172817).

68125864055 is a wasteful number, since it uses less digits than its factorization.

68125864055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13625172816.

The product of its (nonzero) digits is 2304000, while the sum is 50.

The spelling of 68125864055 in words is "sixty-eight billion, one hundred twenty-five million, eight hundred sixty-four thousand, fifty-five".