11518900171 has 8 divisors (see below), whose sum is σ = 12197494080. Its totient is φ = 10840418688.

The previous prime is 11518900163. The next prime is 11518900189. The reversal of 11518900171 is 17100981511.

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 11518900171 - 2³ = 11518900163 is a prime.

It is a super-2 number, since 2×11518900171² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11518901171) 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, 278485 + ... + 317161.

It is an arithmetic number, because the mean of its divisors is an integer number (1524686760).

Almost surely, 2^11518900171 is an apocalyptic number.

11518900171 is a deficient number, since it is larger than the sum of its proper divisors (678593909).

11518900171 is a wasteful number, since it uses less digits than its factorization.

11518900171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56213.

The product of its (nonzero) digits is 2520, while the sum is 34.

The spelling of 11518900171 in words is "eleven billion, five hundred eighteen million, nine hundred thousand, one hundred seventy-one".