68339717777501 has 2 divisors, whose sum is σ = 68339717777502. Its totient is φ = 68339717777500.

The previous prime is 68339717777447. The next prime is 68339717777519. The reversal of 68339717777501 is 10577771793386.

68339717777501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50688333941476 + 17651383836025 = 7119574^2 + 4201355^2 .

It is a cyclic number.

It is not a de Polignac number, because 68339717777501 - 2²⁶ = 68339650668637 is a prime.

It is a super-4 number, since 4×68339717777501⁴ (a number of 56 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68339717777561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34169858888750 + 34169858888751.

It is an arithmetic number, because the mean of its divisors is an integer number (34169858888751).

Almost surely, 2^{68339717777501} is an apocalyptic number.

It is an amenable number.

68339717777501 is a deficient number, since it is larger than the sum of its proper divisors (1).

68339717777501 is an equidigital number, since it uses as much as digits as its factorization.

68339717777501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326728080, while the sum is 71.

The spelling of 68339717777501 in words is "sixty-eight trillion, three hundred thirty-nine billion, seven hundred seventeen million, seven hundred seventy-seven thousand, five hundred one".