13404178598417 has 2 divisors, whose sum is σ = 13404178598418. Its totient is φ = 13404178598416.

The previous prime is 13404178598399. The next prime is 13404178598471. The reversal of 13404178598417 is 71489587140431.

It is a happy number.

Together with next prime (13404178598471) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13356130396816 + 48048201601 = 3654604^2 + 219199^2 .

It is a cyclic number.

It is not a de Polignac number, because 13404178598417 - 2²⁴ = 13404161821201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13404178598417.

It is not a weakly prime, because it can be changed into another prime (13404178598497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702089299208 + 6702089299209.

It is an arithmetic number, because the mean of its divisors is an integer number (6702089299209).

Almost surely, 2^{13404178598417} is an apocalyptic number.

It is an amenable number.

13404178598417 is a deficient number, since it is larger than the sum of its proper divisors (1).

13404178598417 is an equidigital number, since it uses as much as digits as its factorization.

13404178598417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27095040, while the sum is 62.

The spelling of 13404178598417 in words is "thirteen trillion, four hundred four billion, one hundred seventy-eight million, five hundred ninety-eight thousand, four hundred seventeen".