12287840664 has 64 divisors (see below), whose sum is σ = 35276112000. Its totient is φ = 3527608320.

The previous prime is 12287840651. The next prime is 12287840681. The reversal of 12287840664 is 46604878221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219849 + ... + 1229880.

It is an arithmetic number, because the mean of its divisors is an integer number (551189250).

Almost surely, 2^12287840664 is an apocalyptic number.

It is an amenable number.

12287840664 is an abundant number, since it is smaller than the sum of its proper divisors (22988271336).

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

12287840664 is a wasteful number, since it uses less digits than its factorization.

12287840664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449768 (or 2449764 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 12287840664 in words is "twelve billion, two hundred eighty-seven million, eight hundred forty thousand, six hundred sixty-four".