68876387507 has 4 divisors (see below), whose sum is σ = 68891355480. Its totient is φ = 68861419536.

The previous prime is 68876387407. The next prime is 68876387509. The reversal of 68876387507 is 70578367886.

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

It is a cyclic number.

It is not a de Polignac number, because 68876387507 - 2¹⁶ = 68876321971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68876387509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7477082 + ... + 7486287.

It is an arithmetic number, because the mean of its divisors is an integer number (17222838870).

Almost surely, 2^68876387507 is an apocalyptic number.

68876387507 is a deficient number, since it is larger than the sum of its proper divisors (14967973).

68876387507 is a wasteful number, since it uses less digits than its factorization.

68876387507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14967972.

The product of its (nonzero) digits is 94832640, while the sum is 65.

The spelling of 68876387507 in words is "sixty-eight billion, eight hundred seventy-six million, three hundred eighty-seven thousand, five hundred seven".