11165556151 has 4 divisors (see below), whose sum is σ = 11230097112. Its totient is φ = 11101015192.

The previous prime is 11165556139. The next prime is 11165556179. The reversal of 11165556151 is 15165556111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11165556151 - 2⁷ = 11165556023 is a prime.

It is a super-2 number, since 2×11165556151² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11165556151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11165556121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32270221 + ... + 32270566.

It is an arithmetic number, because the mean of its divisors is an integer number (2807524278).

Almost surely, 2^11165556151 is an apocalyptic number.

11165556151 is a deficient number, since it is larger than the sum of its proper divisors (64540961).

11165556151 is an equidigital number, since it uses as much as digits as its factorization.

11165556151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64540960.

The product of its digits is 22500, while the sum is 37.

The spelling of 11165556151 in words is "eleven billion, one hundred sixty-five million, five hundred fifty-six thousand, one hundred fifty-one".