12287045881 has 16 divisors (see below), whose sum is σ = 13606198848. Its totient is φ = 11002003200.

The previous prime is 12287045843. The next prime is 12287045899. The reversal of 12287045881 is 18854078221.

It is a cyclic number.

It is not a de Polignac number, because 12287045881 - 2¹¹ = 12287043833 is a prime.

It is a super-2 number, since 2×12287045881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12287045801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601030 + ... + 621136.

It is an arithmetic number, because the mean of its divisors is an integer number (850387428).

Almost surely, 2^12287045881 is an apocalyptic number.

12287045881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12287045881 is a deficient number, since it is larger than the sum of its proper divisors (1319152967).

12287045881 is a wasteful number, since it uses less digits than its factorization.

12287045881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20952.

The product of its (nonzero) digits is 286720, while the sum is 46.

The spelling of 12287045881 in words is "twelve billion, two hundred eighty-seven million, forty-five thousand, eight hundred eighty-one".