11353218557 has 8 divisors (see below), whose sum is σ = 11543647320. Its totient is φ = 11162928960.

The previous prime is 11353218521. The next prime is 11353218587. The reversal of 11353218557 is 75581235311.

It can be written as a sum of positive squares in 4 ways, for example, as 2590199236 + 8763019321 = 50894^2 + 93611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11353218557 - 2²⁰ = 11352169981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11353218587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136763 + ... + 203495.

It is an arithmetic number, because the mean of its divisors is an integer number (1442955915).

Almost surely, 2^11353218557 is an apocalyptic number.

It is an amenable number.

11353218557 is a deficient number, since it is larger than the sum of its proper divisors (190428763).

11353218557 is an equidigital number, since it uses as much as digits as its factorization.

11353218557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69583.

The product of its digits is 126000, while the sum is 41.

The spelling of 11353218557 in words is "eleven billion, three hundred fifty-three million, two hundred eighteen thousand, five hundred fifty-seven".