12387292827 has 32 divisors (see below), whose sum is σ = 21211696128. Its totient is φ = 6249868416.

The previous prime is 12387292817. The next prime is 12387292861. The reversal of 12387292827 is 72829278321.

It is not a de Polignac number, because 12387292827 - 2⁷ = 12387292699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12387292827.

It is not an unprimeable number, because it can be changed into a prime (12387292807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 980128 + ... + 992685.

It is an arithmetic number, because the mean of its divisors is an integer number (662865504).

Almost surely, 2^12387292827 is an apocalyptic number.

12387292827 is a deficient number, since it is larger than the sum of its proper divisors (8824403301).

12387292827 is a wasteful number, since it uses less digits than its factorization.

12387292827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972859.

The product of its digits is 1354752, while the sum is 51.

The spelling of 12387292827 in words is "twelve billion, three hundred eighty-seven million, two hundred ninety-two thousand, eight hundred twenty-seven".