12040164256 has 24 divisors (see below), whose sum is σ = 23720985540. Its totient is φ = 6015787008.

The previous prime is 12040164209. The next prime is 12040164271. The reversal of 12040164256 is 65246104021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9542163856 + 2498000400 = 97684^2 + 49980^2 .

It is a super-2 number, since 2×12040164256² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88431 + ... + 178606.

Almost surely, 2^12040164256 is an apocalyptic number.

12040164256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12040164256 is a deficient number, since it is larger than the sum of its proper divisors (11680821284).

12040164256 is a wasteful number, since it uses less digits than its factorization.

12040164256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268456 (or 268448 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 12040164256 its reverse (65246104021), we get a palindrome (77286268277).

The spelling of 12040164256 in words is "twelve billion, forty million, one hundred sixty-four thousand, two hundred fifty-six".