11013775557 has 4 divisors (see below), whose sum is σ = 14685034080. Its totient is φ = 7342517036.

The previous prime is 11013775537. The next prime is 11013775571. The reversal of 11013775557 is 75557731011.

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 11013775557 - 2¹¹ = 11013773509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013775537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835629257 + ... + 1835629262.

It is an arithmetic number, because the mean of its divisors is an integer number (3671258520).

Almost surely, 2^11013775557 is an apocalyptic number.

It is an amenable number.

11013775557 is a deficient number, since it is larger than the sum of its proper divisors (3671258523).

11013775557 is an equidigital number, since it uses as much as digits as its factorization.

11013775557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671258522.

The product of its (nonzero) digits is 128625, while the sum is 42.

The spelling of 11013775557 in words is "eleven billion, thirteen million, seven hundred seventy-five thousand, five hundred fifty-seven".