12659446540 has 48 divisors (see below), whose sum is σ = 30136669920. Its totient is φ = 4428241920.

The previous prime is 12659446507. The next prime is 12659446543. The reversal of 12659446540 is 4564495621.

It is not an unprimeable number, because it can be changed into a prime (12659446543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276381 + ... + 1286260.

It is an arithmetic number, because the mean of its divisors is an integer number (627847290).

Almost surely, 2^12659446540 is an apocalyptic number.

12659446540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12659446540 is an abundant number, since it is smaller than the sum of its proper divisors (17477223380).

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

12659446540 is a wasteful number, since it uses less digits than its factorization.

12659446540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562682 (or 2562680 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 12659446540 in words is "twelve billion, six hundred fifty-nine million, four hundred forty-six thousand, five hundred forty".