11256108557 has 2 divisors, whose sum is σ = 11256108558. Its totient is φ = 11256108556.

The previous prime is 11256108551. The next prime is 11256108569. The reversal of 11256108557 is 75580165211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9074658121 + 2181450436 = 95261^2 + 46706^2 .

It is a cyclic number.

It is not a de Polignac number, because 11256108557 - 2⁸ = 11256108301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11256108551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628054278 + 5628054279.

It is an arithmetic number, because the mean of its divisors is an integer number (5628054279).

Almost surely, 2^11256108557 is an apocalyptic number.

It is an amenable number.

11256108557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11256108557 is an equidigital number, since it uses as much as digits as its factorization.

11256108557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 41.

The spelling of 11256108557 in words is "eleven billion, two hundred fifty-six million, one hundred eight thousand, five hundred fifty-seven".