13233319987 has 2 divisors, whose sum is σ = 13233319988. Its totient is φ = 13233319986.

The previous prime is 13233319973. The next prime is 13233319993. The reversal of 13233319987 is 78991333231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13233319987 - 2³¹ = 11085836339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13233319987.

It is not a weakly prime, because it can be changed into another prime (13233319087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6616659993 + 6616659994.

It is an arithmetic number, because the mean of its divisors is an integer number (6616659994).

Almost surely, 2^13233319987 is an apocalyptic number.

13233319987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13233319987 is an equidigital number, since it uses as much as digits as its factorization.

13233319987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 49.

The spelling of 13233319987 in words is "thirteen billion, two hundred thirty-three million, three hundred nineteen thousand, nine hundred eighty-seven".