77766758552113 has 2 divisors, whose sum is σ = 77766758552114. Its totient is φ = 77766758552112.

The previous prime is 77766758552059. The next prime is 77766758552179. The reversal of 77766758552113 is 31125585766777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51688291954849 + 26078466597264 = 7189457^2 + 5106708^2 .

It is a cyclic number.

It is not a de Polignac number, because 77766758552113 - 2¹³ = 77766758543921 is a prime.

It is not a weakly prime, because it can be changed into another prime (77766758522113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38883379276056 + 38883379276057.

It is an arithmetic number, because the mean of its divisors is an integer number (38883379276057).

Almost surely, 2^{77766758552113} is an apocalyptic number.

It is an amenable number.

77766758552113 is a deficient number, since it is larger than the sum of its proper divisors (1).

77766758552113 is an equidigital number, since it uses as much as digits as its factorization.

77766758552113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518616000, while the sum is 70.

The spelling of 77766758552113 in words is "seventy-seven trillion, seven hundred sixty-six billion, seven hundred fifty-eight million, five hundred fifty-two thousand, one hundred thirteen".