12387631947 has 8 divisors (see below), whose sum is σ = 16517962560. Its totient is φ = 8257861320.

The previous prime is 12387631901. The next prime is 12387631969. The reversal of 12387631947 is 74913678321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12387631947 - 2⁸ = 12387631691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12387631947.

It is not an unprimeable number, because it can be changed into a prime (12387631447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85329 + ... + 179042.

It is an arithmetic number, because the mean of its divisors is an integer number (2064745320).

Almost surely, 2^12387631947 is an apocalyptic number.

12387631947 is a deficient number, since it is larger than the sum of its proper divisors (4130330613).

12387631947 is a wasteful number, since it uses less digits than its factorization.

12387631947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279993.

The product of its digits is 1524096, while the sum is 51.

The spelling of 12387631947 in words is "twelve billion, three hundred eighty-seven million, six hundred thirty-one thousand, nine hundred forty-seven".