11109917557 has 4 divisors (see below), whose sum is σ = 11694650080. Its totient is φ = 10525185036.

The previous prime is 11109917527. The next prime is 11109917569. The reversal of 11109917557 is 75571990111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11109917557 - 2¹⁵ = 11109884789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109917527) 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 in 3 ways as a sum of consecutive naturals, for example, 292366233 + ... + 292366270.

It is an arithmetic number, because the mean of its divisors is an integer number (2923662520).

Almost surely, 2^11109917557 is an apocalyptic number.

It is an amenable number.

11109917557 is a deficient number, since it is larger than the sum of its proper divisors (584732523).

11109917557 is an equidigital number, since it uses as much as digits as its factorization.

11109917557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584732522.

The product of its (nonzero) digits is 99225, while the sum is 46.

The spelling of 11109917557 in words is "eleven billion, one hundred nine million, nine hundred seventeen thousand, five hundred fifty-seven".