12566332716 has 96 divisors (see below), whose sum is σ = 35069260800. Its totient is φ = 3424253184.

The previous prime is 12566332711. The next prime is 12566332721. The reversal of 12566332716 is 61723366521.

It is an interprime number because it is at equal distance from previous prime (12566332711) and next prime (12566332721).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (12566332711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 664950 + ... + 683586.

It is an arithmetic number, because the mean of its divisors is an integer number (365304800).

Almost surely, 2^12566332716 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 12566332716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17534630400).

12566332716 is an abundant number, since it is smaller than the sum of its proper divisors (22502928084).

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

12566332716 is a wasteful number, since it uses less digits than its factorization.

12566332716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19023 (or 19021 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The spelling of 12566332716 in words is "twelve billion, five hundred sixty-six million, three hundred thirty-two thousand, seven hundred sixteen".