166863126734 has 16 divisors (see below), whose sum is σ = 254421982320. Its totient is φ = 82056058560.

The previous prime is 166863126701. The next prime is 166863126739. The reversal of 166863126734 is 437621368661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166863126739) 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, 1355357 + ... + 1473335.

It is an arithmetic number, because the mean of its divisors is an integer number (15901373895).

Almost surely, 2^166863126734 is an apocalyptic number.

166863126734 is a deficient number, since it is larger than the sum of its proper divisors (87558855586).

166863126734 is a wasteful number, since it uses less digits than its factorization.

166863126734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129635.

The product of its digits is 5225472, while the sum is 53.

The spelling of 166863126734 in words is "one hundred sixty-six billion, eight hundred sixty-three million, one hundred twenty-six thousand, seven hundred thirty-four".