11516155644577 has 2 divisors, whose sum is σ = 11516155644578. Its totient is φ = 11516155644576.

The previous prime is 11516155644551. The next prime is 11516155644671. The reversal of 11516155644577 is 77544655161511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9093849391201 + 2422306253376 = 3015601^2 + 1556376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11516155644577 is a prime.

It is not a weakly prime, because it can be changed into another prime (11516155644277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5758077822288 + 5758077822289.

It is an arithmetic number, because the mean of its divisors is an integer number (5758077822289).

Almost surely, 2^{11516155644577} is an apocalyptic number.

It is an amenable number.

11516155644577 is a deficient number, since it is larger than the sum of its proper divisors (1).

11516155644577 is an equidigital number, since it uses as much as digits as its factorization.

11516155644577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640000, while the sum is 58.

The spelling of 11516155644577 in words is "eleven trillion, five hundred sixteen billion, one hundred fifty-five million, six hundred forty-four thousand, five hundred seventy-seven".