17683686493 has 16 divisors (see below), whose sum is σ = 19416028032. Its totient is φ = 15972264000.

The previous prime is 17683686487. The next prime is 17683686521. The reversal of 17683686493 is 39468638671.

It is not a de Polignac number, because 17683686493 - 2¹³ = 17683678301 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 (17683686443) 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, 4395823 + ... + 4399843.

It is an arithmetic number, because the mean of its divisors is an integer number (1213501752).

Almost surely, 2^17683686493 is an apocalyptic number.

It is an amenable number.

17683686493 is a deficient number, since it is larger than the sum of its proper divisors (1732341539).

17683686493 is a wasteful number, since it uses less digits than its factorization.

17683686493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516.

The product of its digits is 31352832, while the sum is 61.

The spelling of 17683686493 in words is "seventeen billion, six hundred eighty-three million, six hundred eighty-six thousand, four hundred ninety-three".