68708837579 has 16 divisors (see below), whose sum is σ = 70424640000. Its totient is φ = 67019088576.

The previous prime is 68708837573. The next prime is 68708837591. The reversal of 68708837579 is 97573880786.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68708837579 is a prime.

It is a super-2 number, since 2×68708837579² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68708837573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2396672 + ... + 2425170.

It is an arithmetic number, because the mean of its divisors is an integer number (4401540000).

Almost surely, 2^68708837579 is an apocalyptic number.

68708837579 is a deficient number, since it is larger than the sum of its proper divisors (1715802421).

68708837579 is a wasteful number, since it uses less digits than its factorization.

68708837579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28954.

The product of its (nonzero) digits is 142248960, while the sum is 68.

The spelling of 68708837579 in words is "sixty-eight billion, seven hundred eight million, eight hundred thirty-seven thousand, five hundred seventy-nine".