12647081398 has 24 divisors (see below), whose sum is σ = 22099920984. Its totient is φ = 5412304800.

The previous prime is 12647081393. The next prime is 12647081399. The reversal of 12647081398 is 89318074621.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12647081393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25663 + ... + 161098.

It is an arithmetic number, because the mean of its divisors is an integer number (920830041).

Almost surely, 2^12647081398 is an apocalyptic number.

12647081398 is a deficient number, since it is larger than the sum of its proper divisors (9452839586).

12647081398 is a wasteful number, since it uses less digits than its factorization.

12647081398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187468 (or 187461 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 12647081398 in words is "twelve billion, six hundred forty-seven million, eighty-one thousand, three hundred ninety-eight".