12015240451 has 2 divisors, whose sum is σ = 12015240452. Its totient is φ = 12015240450.

The previous prime is 12015240443. The next prime is 12015240521. The reversal of 12015240451 is 15404251021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12015240451 - 2³ = 12015240443 is a prime.

It is not a weakly prime, because it can be changed into another prime (12015240421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6007620225 + 6007620226.

It is an arithmetic number, because the mean of its divisors is an integer number (6007620226).

Almost surely, 2^12015240451 is an apocalyptic number.

12015240451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12015240451 is an equidigital number, since it uses as much as digits as its factorization.

12015240451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 12015240451 its reverse (15404251021), we get a palindrome (27419491472).

The spelling of 12015240451 in words is "twelve billion, fifteen million, two hundred forty thousand, four hundred fifty-one".