12164454657 has 6 divisors (see below), whose sum is σ = 17570878962. Its totient is φ = 8109636432.

The previous prime is 12164454647. The next prime is 12164454661. The reversal of 12164454657 is 75645446121.

12164454657 is a `hidden beast` number, since 1 + 2 + 16 + 44 + 546 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11346723441 + 817731216 = 106521^2 + 28596^2 .

It is not a de Polignac number, because 12164454657 - 2¹⁰ = 12164453633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12164454647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 675803028 + ... + 675803045.

It is an arithmetic number, because the mean of its divisors is an integer number (2928479827).

Almost surely, 2^12164454657 is an apocalyptic number.

It is an amenable number.

12164454657 is a deficient number, since it is larger than the sum of its proper divisors (5406424305).

12164454657 is a wasteful number, since it uses less digits than its factorization.

12164454657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351606079 (or 1351606076 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 12164454657 in words is "twelve billion, one hundred sixty-four million, four hundred fifty-four thousand, six hundred fifty-seven".