166530262646 has 64 divisors (see below), whose sum is σ = 285650620416. Its totient is φ = 72074772000.

The previous prime is 166530262637. The next prime is 166530262699. The reversal of 166530262646 is 646262035661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 166530262646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158448821 + ... + 158449871.

It is an arithmetic number, because the mean of its divisors is an integer number (4463290944).

Almost surely, 2^166530262646 is an apocalyptic number.

166530262646 is a deficient number, since it is larger than the sum of its proper divisors (119120357770).

166530262646 is a wasteful number, since it uses less digits than its factorization.

166530262646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 166530262646 in words is "one hundred sixty-six billion, five hundred thirty million, two hundred sixty-two thousand, six hundred forty-six".