11165390655 has 16 divisors (see below), whose sum is σ = 18347453664. Its totient is φ = 5793932160.

The previous prime is 11165390647. The next prime is 11165390669. The reversal of 11165390655 is 55609356111.

It is not a de Polignac number, because 11165390655 - 2³ = 11165390647 is a prime.

It is a super-2 number, since 2×11165390655² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10058356 + ... + 10059465.

It is an arithmetic number, because the mean of its divisors is an integer number (1146715854).

Almost surely, 2^11165390655 is an apocalyptic number.

11165390655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11165390655 is a deficient number, since it is larger than the sum of its proper divisors (7182063009).

11165390655 is a wasteful number, since it uses less digits than its factorization.

11165390655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20117866.

The product of its (nonzero) digits is 121500, while the sum is 42.

The spelling of 11165390655 in words is "eleven billion, one hundred sixty-five million, three hundred ninety thousand, six hundred fifty-five".