12591530493 has 16 divisors (see below), whose sum is σ = 17333262336. Its totient is φ = 8122169520.

The previous prime is 12591530417. The next prime is 12591530531. The reversal of 12591530493 is 39403519521.

It is not a de Polignac number, because 12591530493 - 2¹² = 12591526397 is a prime.

It is a super-2 number, since 2×12591530493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12591530993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1015630 + ... + 1027952.

It is an arithmetic number, because the mean of its divisors is an integer number (1083328896).

Almost surely, 2^12591530493 is an apocalyptic number.

It is an amenable number.

12591530493 is a deficient number, since it is larger than the sum of its proper divisors (4741731843).

12591530493 is a wasteful number, since it uses less digits than its factorization.

12591530493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23344.

The product of its (nonzero) digits is 145800, while the sum is 42.

The spelling of 12591530493 in words is "twelve billion, five hundred ninety-one million, five hundred thirty thousand, four hundred ninety-three".