11766459557 has 2 divisors, whose sum is σ = 11766459558. Its totient is φ = 11766459556.

The previous prime is 11766459493. The next prime is 11766459581. The reversal of 11766459557 is 75595466711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7571436196 + 4195023361 = 87014^2 + 64769^2 .

It is a cyclic number.

It is not a de Polignac number, because 11766459557 - 2⁶ = 11766459493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11766459157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5883229778 + 5883229779.

It is an arithmetic number, because the mean of its divisors is an integer number (5883229779).

Almost surely, 2^11766459557 is an apocalyptic number.

It is an amenable number.

11766459557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11766459557 is an equidigital number, since it uses as much as digits as its factorization.

11766459557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938000, while the sum is 56.

The spelling of 11766459557 in words is "eleven billion, seven hundred sixty-six million, four hundred fifty-nine thousand, five hundred fifty-seven".