12590781521 has 8 divisors (see below), whose sum is σ = 12772209024. Its totient is φ = 12409467840.

The previous prime is 12590781517. The next prime is 12590781551. The reversal of 12590781521 is 12518709521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12590781521 - 2² = 12590781517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12590781551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208460 + ... + 261986.

It is an arithmetic number, because the mean of its divisors is an integer number (1596526128).

Almost surely, 2^12590781521 is an apocalyptic number.

It is an amenable number.

12590781521 is a deficient number, since it is larger than the sum of its proper divisors (181427503).

12590781521 is an equidigital number, since it uses as much as digits as its factorization.

12590781521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56911.

The product of its (nonzero) digits is 50400, while the sum is 41.

The spelling of 12590781521 in words is "twelve billion, five hundred ninety million, seven hundred eighty-one thousand, five hundred twenty-one".