12665377360 has 80 divisors (see below), whose sum is σ = 30813742080. Its totient is φ = 4835496960.

The previous prime is 12665377327. The next prime is 12665377393. The reversal of 12665377360 is 6377356621.

It is an interprime number because it is at equal distance from previous prime (12665377327) and next prime (12665377393).

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 12665377360.

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, 146061 + ... + 216019.

It is an arithmetic number, because the mean of its divisors is an integer number (385171776).

Almost surely, 2^12665377360 is an apocalyptic number.

12665377360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12665377360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15406871040).

12665377360 is an abundant number, since it is smaller than the sum of its proper divisors (18148364720).

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

12665377360 is a wasteful number, since it uses less digits than its factorization.

12665377360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70076 (or 70070 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 46.

The spelling of 12665377360 in words is "twelve billion, six hundred sixty-five million, three hundred seventy-seven thousand, three hundred sixty".