13004509997 has 2 divisors, whose sum is σ = 13004509998. Its totient is φ = 13004509996.

The previous prime is 13004509993. The next prime is 13004510003. The reversal of 13004509997 is 79990540031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6880038916 + 6124471081 = 82946^2 + 78259^2 .

It is a cyclic number.

It is not a de Polignac number, because 13004509997 - 2² = 13004509993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13004509993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6502254998 + 6502254999.

It is an arithmetic number, because the mean of its divisors is an integer number (6502254999).

Almost surely, 2^13004509997 is an apocalyptic number.

It is an amenable number.

13004509997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13004509997 is an equidigital number, since it uses as much as digits as its factorization.

13004509997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 47.

The spelling of 13004509997 in words is "thirteen billion, four million, five hundred nine thousand, nine hundred ninety-seven".