12382326640 has 20 divisors (see below), whose sum is σ = 28788909624. Its totient is φ = 4952930624.

The previous prime is 12382326617. The next prime is 12382326679. The reversal of 12382326640 is 4662328321.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 12382326640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77389462 + ... + 77389621.

Almost surely, 2^12382326640 is an apocalyptic number.

12382326640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12382326640 is an abundant number, since it is smaller than the sum of its proper divisors (16406582984).

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

12382326640 is a wasteful number, since it uses less digits than its factorization.

12382326640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154779096 (or 154779090 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 12382326640 in words is "twelve billion, three hundred eighty-two million, three hundred twenty-six thousand, six hundred forty".