12452056581 has 16 divisors (see below), whose sum is σ = 17479078400. Its totient is φ = 7863328368.

The previous prime is 12452056579. The next prime is 12452056679. The reversal of 12452056581 is 18565025421.

It is not a de Polignac number, because 12452056581 - 2¹ = 12452056579 is a prime.

It is a super-2 number, since 2×12452056581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12452056081) 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, 585720 + ... + 606606.

It is an arithmetic number, because the mean of its divisors is an integer number (1092442400).

Almost surely, 2^12452056581 is an apocalyptic number.

It is an amenable number.

12452056581 is a deficient number, since it is larger than the sum of its proper divisors (5027021819).

12452056581 is a wasteful number, since it uses less digits than its factorization.

12452056581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31368.

The product of its (nonzero) digits is 96000, while the sum is 39.

The spelling of 12452056581 in words is "twelve billion, four hundred fifty-two million, fifty-six thousand, five hundred eighty-one".