11777145617 has 2 divisors, whose sum is σ = 11777145618. Its totient is φ = 11777145616.

The previous prime is 11777145587. The next prime is 11777145691. The reversal of 11777145617 is 71654177711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11651907136 + 125238481 = 107944^2 + 11191^2 .

It is a cyclic number.

It is not a de Polignac number, because 11777145617 - 2⁸ = 11777145361 is a prime.

It is not a weakly prime, because it can be changed into another prime (11777145217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5888572808 + 5888572809.

It is an arithmetic number, because the mean of its divisors is an integer number (5888572809).

Almost surely, 2^11777145617 is an apocalyptic number.

It is an amenable number.

11777145617 is a deficient number, since it is larger than the sum of its proper divisors (1).

11777145617 is an equidigital number, since it uses as much as digits as its factorization.

11777145617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288120, while the sum is 47.

The spelling of 11777145617 in words is "eleven billion, seven hundred seventy-seven million, one hundred forty-five thousand, six hundred seventeen".