17945168457 has 16 divisors (see below), whose sum is σ = 24707967680. Its totient is φ = 11578012992.

The previous prime is 17945168441. The next prime is 17945168473. The reversal of 17945168457 is 75486154971.

It is an interprime number because it is at equal distance from previous prime (17945168441) and next prime (17945168473).

It is not a de Polignac number, because 17945168457 - 2⁴ = 17945168441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17945168397 and 17945168406.

It is not an unprimeable number, because it can be changed into a prime (17945168497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624058 + ... + 652179.

It is an arithmetic number, because the mean of its divisors is an integer number (1544247980).

Almost surely, 2^17945168457 is an apocalyptic number.

It is an amenable number.

17945168457 is a deficient number, since it is larger than the sum of its proper divisors (6762799223).

17945168457 is a wasteful number, since it uses less digits than its factorization.

17945168457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276392.

The product of its digits is 8467200, while the sum is 57.

The spelling of 17945168457 in words is "seventeen billion, nine hundred forty-five million, one hundred sixty-eight thousand, four hundred fifty-seven".