13645079687 has 2 divisors, whose sum is σ = 13645079688. Its totient is φ = 13645079686.

The previous prime is 13645079593. The next prime is 13645079713. The reversal of 13645079687 is 78697054631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13645079687 - 2¹⁰ = 13645078663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13645070687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6822539843 + 6822539844.

It is an arithmetic number, because the mean of its divisors is an integer number (6822539844).

Almost surely, 2^13645079687 is an apocalyptic number.

13645079687 is a deficient number, since it is larger than the sum of its proper divisors (1).

13645079687 is an equidigital number, since it uses as much as digits as its factorization.

13645079687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 13645079687 in words is "thirteen billion, six hundred forty-five million, seventy-nine thousand, six hundred eighty-seven".