12591401490 has 24 divisors (see below), whose sum is σ = 32737644108. Its totient is φ = 3357707040.

The previous prime is 12591401477. The next prime is 12591401503. The reversal of 12591401490 is 9410419521.

It is a happy number.

12591401490 is a `hidden beast` number, since 1 + 25 + 9 + 140 + 1 + 490 = 666.

It is an interprime number because it is at equal distance from previous prime (12591401477) and next prime (12591401503).

It can be written as a sum of positive squares in 2 ways, for example, as 12400381449 + 191020041 = 111357^2 + 13821^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69952141 + ... + 69952320.

Almost surely, 2^12591401490 is an apocalyptic number.

12591401490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12591401490 is an abundant number, since it is smaller than the sum of its proper divisors (20146242618).

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

12591401490 is a wasteful number, since it uses less digits than its factorization.

12591401490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139904474 (or 139904471 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 12591401490 in words is "twelve billion, five hundred ninety-one million, four hundred one thousand, four hundred ninety".