13478600684993 has 2 divisors, whose sum is σ = 13478600684994. Its totient is φ = 13478600684992.

The previous prime is 13478600684977. The next prime is 13478600685001. The reversal of 13478600684993 is 39948600687431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11641689408064 + 1836911276929 = 3411992^2 + 1355327^2 .

It is a cyclic number.

It is not a de Polignac number, because 13478600684993 - 2⁴ = 13478600684977 is a prime.

It is not a weakly prime, because it can be changed into another prime (13478600684903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6739300342496 + 6739300342497.

It is an arithmetic number, because the mean of its divisors is an integer number (6739300342497).

Almost surely, 2^{13478600684993} is an apocalyptic number.

It is an amenable number.

13478600684993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13478600684993 is an equidigital number, since it uses as much as digits as its factorization.

13478600684993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188116992, while the sum is 68.

The spelling of 13478600684993 in words is "thirteen trillion, four hundred seventy-eight billion, six hundred million, six hundred eighty-four thousand, nine hundred ninety-three".