12775868388 has 36 divisors (see below), whose sum is σ = 32312437248. Its totient is φ = 4256264880.

The previous prime is 12775868381. The next prime is 12775868429. The reversal of 12775868388 is 88386857721.

12775868388 is a `hidden beast` number, since 12 + 7 + 7 + 586 + 8 + 38 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (12775868381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31708 + ... + 162963.

Almost surely, 2^12775868388 is an apocalyptic number.

12775868388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12775868388 is an abundant number, since it is smaller than the sum of its proper divisors (19536568860).

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

12775868388 is a wasteful number, since it uses less digits than its factorization.

12775868388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196504 (or 196499 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 12775868388 in words is "twelve billion, seven hundred seventy-five million, eight hundred sixty-eight thousand, three hundred eighty-eight".