68876388257 has 8 divisors (see below), whose sum is σ = 69143276160. Its totient is φ = 68609581200.

The previous prime is 68876388239. The next prime is 68876388277. The reversal of 68876388257 is 75288367886.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68876388257 - 2⁸ = 68876388001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68876388277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122718 + ... + 2154920.

It is an arithmetic number, because the mean of its divisors is an integer number (8642909520).

Almost surely, 2^68876388257 is an apocalyptic number.

It is an amenable number.

68876388257 is a deficient number, since it is larger than the sum of its proper divisors (266887903).

68876388257 is a wasteful number, since it uses less digits than its factorization.

68876388257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40423.

The product of its digits is 216760320, while the sum is 68.

The spelling of 68876388257 in words is "sixty-eight billion, eight hundred seventy-six million, three hundred eighty-eight thousand, two hundred fifty-seven".