12649794487 has 8 divisors (see below), whose sum is σ = 13908436992. Its totient is φ = 11409262200.

The previous prime is 12649794473. The next prime is 12649794491. The reversal of 12649794487 is 78449794621.

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

It is a cyclic number.

It is not a de Polignac number, because 12649794487 - 2⁷ = 12649794359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12649794457) 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, 4526089 + ... + 4528882.

It is an arithmetic number, because the mean of its divisors is an integer number (1738554624).

Almost surely, 2^12649794487 is an apocalyptic number.

12649794487 is a deficient number, since it is larger than the sum of its proper divisors (1258642505).

12649794487 is a wasteful number, since it uses less digits than its factorization.

12649794487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055109.

The product of its digits is 24385536, while the sum is 61.

The spelling of 12649794487 in words is "twelve billion, six hundred forty-nine million, seven hundred ninety-four thousand, four hundred eighty-seven".