12056023644 has 24 divisors (see below), whose sum is σ = 32149396608. Its totient is φ = 3444578160.

The previous prime is 12056023633. The next prime is 12056023691. The reversal of 12056023644 is 44632065021.

It is a super-2 number, since 2×12056023644² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71761962 + ... + 71762129.

It is an arithmetic number, because the mean of its divisors is an integer number (1339558192).

Almost surely, 2^12056023644 is an apocalyptic number.

12056023644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12056023644 is an abundant number, since it is smaller than the sum of its proper divisors (20093372964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12056023644 is a wasteful number, since it uses less digits than its factorization.

12056023644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143524105 (or 143524103 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 12056023644 its reverse (44632065021), we get a palindrome (56688088665).

The spelling of 12056023644 in words is "twelve billion, fifty-six million, twenty-three thousand, six hundred forty-four".