12737585491 has 4 divisors (see below), whose sum is σ = 12738571000. Its totient is φ = 12736599984.

The previous prime is 12737585477. The next prime is 12737585501. The reversal of 12737585491 is 19458573721.

12737585491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12737585491 - 2⁵ = 12737585459 is a prime.

It is a super-2 number, since 2×12737585491² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12737585401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473106 + ... + 499303.

It is an arithmetic number, because the mean of its divisors is an integer number (3184642750).

Almost surely, 2^12737585491 is an apocalyptic number.

12737585491 is a deficient number, since it is larger than the sum of its proper divisors (985509).

12737585491 is an equidigital number, since it uses as much as digits as its factorization.

12737585491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985508.

The product of its digits is 2116800, while the sum is 52.

The spelling of 12737585491 in words is "twelve billion, seven hundred thirty-seven million, five hundred eighty-five thousand, four hundred ninety-one".