68517733057 has 2 divisors, whose sum is σ = 68517733058. Its totient is φ = 68517733056.

The previous prime is 68517733013. The next prime is 68517733103. The reversal of 68517733057 is 75033771586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64785011841 + 3732721216 = 254529^2 + 61096^2 .

It is a cyclic number.

It is not a de Polignac number, because 68517733057 - 2³¹ = 66370249409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68517732995 and 68517733013.

It is not a weakly prime, because it can be changed into another prime (68517733357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34258866528 + 34258866529.

It is an arithmetic number, because the mean of its divisors is an integer number (34258866529).

Almost surely, 2^68517733057 is an apocalyptic number.

It is an amenable number.

68517733057 is a deficient number, since it is larger than the sum of its proper divisors (1).

68517733057 is an equidigital number, since it uses as much as digits as its factorization.

68517733057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 68517733057 in words is "sixty-eight billion, five hundred seventeen million, seven hundred thirty-three thousand, fifty-seven".