19408823710317 has 12 divisors (see below), whose sum is σ = 28035005843260. Its totient is φ = 12939198147648.

The previous prime is 19408823710313. The next prime is 19408823710421. The reversal of 19408823710317 is 71301732880491.

19408823710317 is a `hidden beast` number, since 1 + 9 + 4 + 0 + 88 + 237 + 10 + 317 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12461034140361 + 6947789569956 = 3530019^2 + 2635866^2 .

It is not a de Polignac number, because 19408823710317 - 2² = 19408823710313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19408823710313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11603409 + ... + 13170297.

Almost surely, 2^{19408823710317} is an apocalyptic number.

It is an amenable number.

19408823710317 is a deficient number, since it is larger than the sum of its proper divisors (8626182132943).

19408823710317 is a wasteful number, since it uses less digits than its factorization.

19408823710317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943212 (or 2943209 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 19408823710317 in words is "nineteen trillion, four hundred eight billion, eight hundred twenty-three million, seven hundred ten thousand, three hundred seventeen".