12015650464 has 48 divisors (see below), whose sum is σ = 24969168000. Its totient is φ = 5676009984.

The previous prime is 12015650453. The next prime is 12015650477. The reversal of 12015650464 is 46405651021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196212 + ... + 250060.

It is an arithmetic number, because the mean of its divisors is an integer number (520191000).

Almost surely, 2^12015650464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12015650464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12484584000).

12015650464 is an abundant number, since it is smaller than the sum of its proper divisors (12953517536).

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

12015650464 is a wasteful number, since it uses less digits than its factorization.

12015650464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54245 (or 54237 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 12015650464 in words is "twelve billion, fifteen million, six hundred fifty thousand, four hundred sixty-four".