12566144580 has 96 divisors (see below), whose sum is σ = 38405017728. Its totient is φ = 3044659200.

The previous prime is 12566144579. The next prime is 12566144581. The reversal of 12566144580 is 8544166521.

It is an interprime number because it is at equal distance from previous prime (12566144579) and next prime (12566144581).

It is not an unprimeable number, because it can be changed into a prime (12566144581) 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, 1535700 + ... + 1543860.

It is an arithmetic number, because the mean of its divisors is an integer number (400052268).

Almost surely, 2^12566144580 is an apocalyptic number.

12566144580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12566144580 is an abundant number, since it is smaller than the sum of its proper divisors (25838873148).

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

12566144580 is a wasteful number, since it uses less digits than its factorization.

12566144580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10517 (or 10515 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 12566144580 in words is "twelve billion, five hundred sixty-six million, one hundred forty-four thousand, five hundred eighty".