11572890169 has 2 divisors, whose sum is σ = 11572890170. Its totient is φ = 11572890168.

The previous prime is 11572890137. The next prime is 11572890193. The reversal of 11572890169 is 96109827511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5812080169 + 5760810000 = 76237^2 + 75900^2 .

It is a cyclic number.

It is not a de Polignac number, because 11572890169 - 2⁵ = 11572890137 is a prime.

It is a super-2 number, since 2×11572890169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11572890869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5786445084 + 5786445085.

It is an arithmetic number, because the mean of its divisors is an integer number (5786445085).

Almost surely, 2^11572890169 is an apocalyptic number.

It is an amenable number.

11572890169 is a deficient number, since it is larger than the sum of its proper divisors (1).

11572890169 is an equidigital number, since it uses as much as digits as its factorization.

11572890169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 49.

The spelling of 11572890169 in words is "eleven billion, five hundred seventy-two million, eight hundred ninety thousand, one hundred sixty-nine".