11266061557 has 2 divisors, whose sum is σ = 11266061558. Its totient is φ = 11266061556.

The previous prime is 11266061507. The next prime is 11266061579. The reversal of 11266061557 is 75516066211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10868896516 + 397165041 = 104254^2 + 19929^2 .

It is a cyclic number.

It is not a de Polignac number, because 11266061557 - 2¹⁵ = 11266028789 is a prime.

It is a super-2 number, since 2×11266061557² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11266061507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5633030778 + 5633030779.

It is an arithmetic number, because the mean of its divisors is an integer number (5633030779).

Almost surely, 2^11266061557 is an apocalyptic number.

It is an amenable number.

11266061557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11266061557 is an equidigital number, since it uses as much as digits as its factorization.

11266061557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 11266061557 in words is "eleven billion, two hundred sixty-six million, sixty-one thousand, five hundred fifty-seven".