68937631179 has 4 divisors (see below), whose sum is σ = 91916841576. Its totient is φ = 45958420784.

The previous prime is 68937631157. The next prime is 68937631289. The reversal of 68937631179 is 97113673986.

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 68937631179 - 2²¹ = 68935534027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68937631109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11489605194 + ... + 11489605199.

It is an arithmetic number, because the mean of its divisors is an integer number (22979210394).

Almost surely, 2^68937631179 is an apocalyptic number.

68937631179 is a deficient number, since it is larger than the sum of its proper divisors (22979210397).

68937631179 is a wasteful number, since it uses less digits than its factorization.

68937631179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22979210396.

The product of its digits is 10287648, while the sum is 60.

The spelling of 68937631179 in words is "sixty-eight billion, nine hundred thirty-seven million, six hundred thirty-one thousand, one hundred seventy-nine".