11171855193 has 8 divisors (see below), whose sum is σ = 15259119456. Its totient is φ = 7266247200.

The previous prime is 11171855153. The next prime is 11171855197. The reversal of 11171855193 is 39155817111.

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

It is not a de Polignac number, because 11171855193 - 2⁸ = 11171854937 is a prime.

It is a super-2 number, since 2×11171855193² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11171855197) 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, 45413923 + ... + 45414168.

It is an arithmetic number, because the mean of its divisors is an integer number (1907389932).

Almost surely, 2^11171855193 is an apocalyptic number.

It is an amenable number.

11171855193 is a deficient number, since it is larger than the sum of its proper divisors (4087264263).

11171855193 is an equidigital number, since it uses as much as digits as its factorization.

11171855193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90828135.

The product of its digits is 37800, while the sum is 42.

The spelling of 11171855193 in words is "eleven billion, one hundred seventy-one million, eight hundred fifty-five thousand, one hundred ninety-three".