12039551999 has 2 divisors, whose sum is σ = 12039552000. Its totient is φ = 12039551998.

The previous prime is 12039551941. The next prime is 12039552017. The reversal of 12039551999 is 99915593021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12039551999 - 2⁸ = 12039551743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12039551999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12039551599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6019775999 + 6019776000.

It is an arithmetic number, because the mean of its divisors is an integer number (6019776000).

Almost surely, 2^12039551999 is an apocalyptic number.

12039551999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12039551999 is an equidigital number, since it uses as much as digits as its factorization.

12039551999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 984150, while the sum is 53.

The spelling of 12039551999 in words is "twelve billion, thirty-nine million, five hundred fifty-one thousand, nine hundred ninety-nine".