68731600079 has 4 divisors (see below), whose sum is σ = 70028422776. Its totient is φ = 67434777384.

The previous prime is 68731600073. The next prime is 68731600129. The reversal of 68731600079 is 97000613786.

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 68731600079 - 2¹² = 68731595983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68731600073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648411269 + ... + 648411374.

It is an arithmetic number, because the mean of its divisors is an integer number (17507105694).

Almost surely, 2^68731600079 is an apocalyptic number.

68731600079 is a deficient number, since it is larger than the sum of its proper divisors (1296822697).

68731600079 is a wasteful number, since it uses less digits than its factorization.

68731600079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296822696.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 68731600079 in words is "sixty-eight billion, seven hundred thirty-one million, six hundred thousand, seventy-nine".