166105899134 has 16 divisors (see below), whose sum is σ = 284840476128. Its totient is φ = 71166365952.

The previous prime is 166105899133. The next prime is 166105899161. The reversal of 166105899134 is 431998501661.

It is a super-2 number, since 2×166105899134² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166105899133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1775819 + ... + 1867014.

It is an arithmetic number, because the mean of its divisors is an integer number (17802529758).

Almost surely, 2^166105899134 is an apocalyptic number.

166105899134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166105899134 is a deficient number, since it is larger than the sum of its proper divisors (118734576994).

166105899134 is a wasteful number, since it uses less digits than its factorization.

166105899134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646099.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 166105899134 in words is "one hundred sixty-six billion, one hundred five million, eight hundred ninety-nine thousand, one hundred thirty-four".