68108794052 has 24 divisors (see below), whose sum is σ = 129682178136. Its totient is φ = 31110755328.

The previous prime is 68108794037. The next prime is 68108794057. The reversal of 68108794052 is 25049780186.

It can be written as a sum of positive squares in 4 ways, for example, as 8696681536 + 59412112516 = 93256^2 + 243746^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68108794057) 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, 6746423 + ... + 6756510.

It is an arithmetic number, because the mean of its divisors is an integer number (5403424089).

Almost surely, 2^68108794052 is an apocalyptic number.

It is an amenable number.

68108794052 is a deficient number, since it is larger than the sum of its proper divisors (61573384084).

68108794052 is a wasteful number, since it uses less digits than its factorization.

68108794052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13503047 (or 13503045 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 68108794052 in words is "sixty-eight billion, one hundred eight million, seven hundred ninety-four thousand, fifty-two".