12045256187 has 2 divisors, whose sum is σ = 12045256188. Its totient is φ = 12045256186.

The previous prime is 12045256183. The next prime is 12045256229. The reversal of 12045256187 is 78165254021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12045256187 - 2² = 12045256183 is a prime.

It is a super-2 number, since 2×12045256187² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12045256183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6022628093 + 6022628094.

It is an arithmetic number, because the mean of its divisors is an integer number (6022628094).

Almost surely, 2^12045256187 is an apocalyptic number.

12045256187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12045256187 is an equidigital number, since it uses as much as digits as its factorization.

12045256187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 12045256187 in words is "twelve billion, forty-five million, two hundred fifty-six thousand, one hundred eighty-seven".