11151572161 has 8 divisors (see below), whose sum is σ = 11809398024. Its totient is φ = 10493952000.

The previous prime is 11151572143. The next prime is 11151572177. The reversal of 11151572161 is 16127515111.

It can be written as a sum of positive squares in 4 ways, for example, as 151757761 + 10999814400 = 12319^2 + 104880^2 .

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 11151572161 - 2²⁷ = 11017354433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11151512161) 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, 68161 + ... + 164161.

It is an arithmetic number, because the mean of its divisors is an integer number (1476174753).

Almost surely, 2^11151572161 is an apocalyptic number.

It is an amenable number.

11151572161 is a deficient number, since it is larger than the sum of its proper divisors (657825863).

11151572161 is an equidigital number, since it uses as much as digits as its factorization.

11151572161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102851.

The product of its digits is 2100, while the sum is 31.

The spelling of 11151572161 in words is "eleven billion, one hundred fifty-one million, five hundred seventy-two thousand, one hundred sixty-one".