68113808784 has 120 divisors (see below), whose sum is σ = 218211152640. Its totient is φ = 19429369344.

The previous prime is 68113808723. The next prime is 68113808821. The reversal of 68113808784 is 48780831186.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68113808784.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 567177 + ... + 676695.

It is an arithmetic number, because the mean of its divisors is an integer number (1818426272).

Almost surely, 2^68113808784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68113808784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109105576320).

68113808784 is an abundant number, since it is smaller than the sum of its proper divisors (150097343856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68113808784 is a wasteful number, since it uses less digits than its factorization.

68113808784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110157 (or 110148 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 68113808784 in words is "sixty-eight billion, one hundred thirteen million, eight hundred eight thousand, seven hundred eighty-four".