68979216622 has 4 divisors (see below), whose sum is σ = 103468824936. Its totient is φ = 34489608310.

The previous prime is 68979216583. The next prime is 68979216637. The reversal of 68979216622 is 22661297986.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17244804154 + ... + 17244804157.

It is an arithmetic number, because the mean of its divisors is an integer number (25867206234).

Almost surely, 2^68979216622 is an apocalyptic number.

68979216622 is a deficient number, since it is larger than the sum of its proper divisors (34489608314).

68979216622 is a wasteful number, since it uses less digits than its factorization.

68979216622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34489608313.

The product of its digits is 7838208, while the sum is 58.

The spelling of 68979216622 in words is "sixty-eight billion, nine hundred seventy-nine million, two hundred sixteen thousand, six hundred twenty-two".