12520583427 has 16 divisors (see below), whose sum is σ = 18213926400. Its totient is φ = 7587328800.

The previous prime is 12520583407. The next prime is 12520583497. The reversal of 12520583427 is 72438502521.

It is not a de Polignac number, because 12520583427 - 2⁸ = 12520583171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12520583407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350902 + ... + 384932.

It is an arithmetic number, because the mean of its divisors is an integer number (1138370400).

Almost surely, 2^12520583427 is an apocalyptic number.

12520583427 is a deficient number, since it is larger than the sum of its proper divisors (5693342973).

12520583427 is a wasteful number, since it uses less digits than its factorization.

12520583427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45194.

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 12520583427 in words is "twelve billion, five hundred twenty million, five hundred eighty-three thousand, four hundred twenty-seven".