68056757285777 has 48 divisors (see below), whose sum is σ = 76327157245680. Its totient is φ = 60624946077696.

The previous prime is 68056757285729. The next prime is 68056757285779. The reversal of 68056757285777 is 77758275765086.

It can be written as a sum of positive squares in 24 ways, for example, as 45134963681536 + 22921793604241 = 6718256^2 + 4787671^2 .

It is not a de Polignac number, because 68056757285777 - 2⁴⁰ = 66957245658001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68056757285779) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133500473 + ... + 134009289.

It is an arithmetic number, because the mean of its divisors is an integer number (1590149109285).

Almost surely, 2^{68056757285777} is an apocalyptic number.

It is an amenable number.

68056757285777 is a deficient number, since it is larger than the sum of its proper divisors (8270399959903).

68056757285777 is a wasteful number, since it uses less digits than its factorization.

68056757285777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509142 (or 509129 counting only the distinct ones).

The product of its (nonzero) digits is 9680832000, while the sum is 80.

The spelling of 68056757285777 in words is "sixty-eight trillion, fifty-six billion, seven hundred fifty-seven million, two hundred eighty-five thousand, seven hundred seventy-seven".