166840010494 has 16 divisors (see below), whose sum is σ = 251077932000. Its totient is φ = 83147559264.

The previous prime is 166840010453. The next prime is 166840010503. The reversal of 166840010494 is 494010048661.

It is a self number, because there is not a number n which added to its sum of digits gives 166840010494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738047 + ... + 1831525.

It is an arithmetic number, because the mean of its divisors is an integer number (15692370750).

Almost surely, 2^166840010494 is an apocalyptic number.

166840010494 is a deficient number, since it is larger than the sum of its proper divisors (84237921506).

166840010494 is a wasteful number, since it uses less digits than its factorization.

166840010494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96387.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 166840010494 in words is "one hundred sixty-six billion, eight hundred forty million, ten thousand, four hundred ninety-four".