13660326499 has 2 divisors, whose sum is σ = 13660326500. Its totient is φ = 13660326498.

The previous prime is 13660326461. The next prime is 13660326509. The reversal of 13660326499 is 99462306631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13660326499 - 2¹³ = 13660318307 is a prime.

It is not a weakly prime, because it can be changed into another prime (13660326419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6830163249 + 6830163250.

It is an arithmetic number, because the mean of its divisors is an integer number (6830163250).

Almost surely, 2^13660326499 is an apocalyptic number.

13660326499 is a deficient number, since it is larger than the sum of its proper divisors (1).

13660326499 is an equidigital number, since it uses as much as digits as its factorization.

13660326499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 49.

The spelling of 13660326499 in words is "thirteen billion, six hundred sixty million, three hundred twenty-six thousand, four hundred ninety-nine".