17899405457 has 2 divisors, whose sum is σ = 17899405458. Its totient is φ = 17899405456.

The previous prime is 17899405429. The next prime is 17899405471. The reversal of 17899405457 is 75450499871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17882108176 + 17297281 = 133724^2 + 4159^2 .

It is an emirp because it is prime and its reverse (75450499871) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17899405457 - 2⁶ = 17899405393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17899405396 and 17899405405.

It is not a weakly prime, because it can be changed into another prime (17899402457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8949702728 + 8949702729.

It is an arithmetic number, because the mean of its divisors is an integer number (8949702729).

Almost surely, 2^17899405457 is an apocalyptic number.

It is an amenable number.

17899405457 is a deficient number, since it is larger than the sum of its proper divisors (1).

17899405457 is an equidigital number, since it uses as much as digits as its factorization.

17899405457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 59.

The spelling of 17899405457 in words is "seventeen billion, eight hundred ninety-nine million, four hundred five thousand, four hundred fifty-seven".