77328781833713 has 2 divisors, whose sum is σ = 77328781833714. Its totient is φ = 77328781833712.

The previous prime is 77328781833593. The next prime is 77328781833727. The reversal of 77328781833713 is 31733818782377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61804015571809 + 15524766261904 = 7861553^2 + 3940148^2 .

It is a cyclic number.

It is not a de Polignac number, because 77328781833713 - 2¹² = 77328781829617 is a prime.

It is not a weakly prime, because it can be changed into another prime (77328781833763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38664390916856 + 38664390916857.

It is an arithmetic number, because the mean of its divisors is an integer number (38664390916857).

Almost surely, 2^{77328781833713} is an apocalyptic number.

It is an amenable number.

77328781833713 is a deficient number, since it is larger than the sum of its proper divisors (1).

77328781833713 is an equidigital number, since it uses as much as digits as its factorization.

77328781833713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 199148544, while the sum is 68.

The spelling of 77328781833713 in words is "seventy-seven trillion, three hundred twenty-eight billion, seven hundred eighty-one million, eight hundred thirty-three thousand, seven hundred thirteen".