68980885979 has 4 divisors (see below), whose sum is σ = 68983282584. Its totient is φ = 68978489376.

The previous prime is 68980885937. The next prime is 68980885991. The reversal of 68980885979 is 97958808986.

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 68980885979 - 2²⁰ = 68979837403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68980885999) 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, 1154597 + ... + 1212870.

It is an arithmetic number, because the mean of its divisors is an integer number (17245820646).

Almost surely, 2^68980885979 is an apocalyptic number.

68980885979 is a deficient number, since it is larger than the sum of its proper divisors (2396605).

68980885979 is a wasteful number, since it uses less digits than its factorization.

68980885979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396604.

The product of its (nonzero) digits is 627056640, while the sum is 77.

The spelling of 68980885979 in words is "sixty-eight billion, nine hundred eighty million, eight hundred eighty-five thousand, nine hundred seventy-nine".