12591338410 has 48 divisors (see below), whose sum is σ = 26411640840. Its totient is φ = 4309347840.

The previous prime is 12591338393. The next prime is 12591338411. The reversal of 12591338410 is 1483319521.

It can be written as a sum of positive squares in 4 ways, for example, as 9468652249 + 3122686161 = 97307^2 + 55881^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12591338410.

It is not an unprimeable number, because it can be changed into a prime (12591338411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256230 + ... + 301390.

Almost surely, 2^12591338410 is an apocalyptic number.

12591338410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12591338410 is an abundant number, since it is smaller than the sum of its proper divisors (13820302430).

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

12591338410 is a wasteful number, since it uses less digits than its factorization.

12591338410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45751 (or 45744 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 12591338410 in words is "twelve billion, five hundred ninety-one million, three hundred thirty-eight thousand, four hundred ten".