11612864169 has 27 divisors (see below), whose sum is σ = 17827330053. Its totient is φ = 7283054592.

The previous prime is 11612864167. The next prime is 11612864189. The reversal of 11612864169 is 96146821611.

The square root of 11612864169 is 107763.

It is a perfect power (a square), and thus also a powerful number.

11612864169 is a `hidden beast` number, since 11 + 612 + 8 + 6 + 4 + 16 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2281304169 + 9331560000 = 47763^2 + 96600^2 .

It is not a de Polignac number, because 11612864169 - 2¹ = 11612864167 is a prime.

It is a super-2 number, since 2×11612864169² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11612864167) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5494857 + ... + 5496969.

Almost surely, 2^11612864169 is an apocalyptic number.

11612864169 is the 107763-rd square number.

11612864169 is the 53882-nd centered octagonal number.

It is an amenable number.

11612864169 is a deficient number, since it is larger than the sum of its proper divisors (6214465884).

11612864169 is an frugal number, since it uses more digits than its factorization.

11612864169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 2133 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The spelling of 11612864169 in words is "eleven billion, six hundred twelve million, eight hundred sixty-four thousand, one hundred sixty-nine".