68118030791 has 8 divisors (see below), whose sum is σ = 68358654000. Its totient is φ = 67877744320.

The previous prime is 68118030787. The next prime is 68118030803. The reversal of 68118030791 is 19703081186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68118030791 - 2² = 68118030787 is a prime.

It is a super-2 number, since 2×68118030791² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68118030751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324596 + ... + 491526.

It is an arithmetic number, because the mean of its divisors is an integer number (8544831750).

Almost surely, 2^68118030791 is an apocalyptic number.

68118030791 is a deficient number, since it is larger than the sum of its proper divisors (240623209).

68118030791 is a wasteful number, since it uses less digits than its factorization.

68118030791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168369.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 68118030791 in words is "sixty-eight billion, one hundred eighteen million, thirty thousand, seven hundred ninety-one".