166872573434 has 16 divisors (see below), whose sum is σ = 286072948800. Its totient is φ = 71515397184.

The previous prime is 166872573421. The next prime is 166872573443. The reversal of 166872573434 is 434375278661.

It is a self number, because there is not a number n which added to its sum of digits gives 166872573434.

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, 935657 + ... + 1099635.

It is an arithmetic number, because the mean of its divisors is an integer number (17879559300).

Almost surely, 2^166872573434 is an apocalyptic number.

166872573434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166872573434 is a deficient number, since it is larger than the sum of its proper divisors (119200375366).

166872573434 is a wasteful number, since it uses less digits than its factorization.

166872573434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236677.

The product of its digits is 20321280, while the sum is 56.

The spelling of 166872573434 in words is "one hundred sixty-six billion, eight hundred seventy-two million, five hundred seventy-three thousand, four hundred thirty-four".