12549582237 has 4 divisors (see below), whose sum is σ = 16732776320. Its totient is φ = 8366388156.

The previous prime is 12549582217. The next prime is 12549582239. The reversal of 12549582237 is 73228594521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12549582237 - 2¹² = 12549578141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12549582239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2091597037 + ... + 2091597042.

It is an arithmetic number, because the mean of its divisors is an integer number (4183194080).

Almost surely, 2^12549582237 is an apocalyptic number.

It is an amenable number.

12549582237 is a deficient number, since it is larger than the sum of its proper divisors (4183194083).

12549582237 is an equidigital number, since it uses as much as digits as its factorization.

12549582237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183194082.

The product of its digits is 1209600, while the sum is 48.

The spelling of 12549582237 in words is "twelve billion, five hundred forty-nine million, five hundred eighty-two thousand, two hundred thirty-seven".