166349244720 has 40 divisors (see below), whose sum is σ = 515682659376. Its totient is φ = 44359798528.

The previous prime is 166349244709. The next prime is 166349244767. The reversal of 166349244720 is 27442943661.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 166349244720.

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, 346560687 + ... + 346561166.

Almost surely, 2^166349244720 is an apocalyptic number.

166349244720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166349244720 is an abundant number, since it is smaller than the sum of its proper divisors (349333414656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166349244720 is a wasteful number, since it uses less digits than its factorization.

166349244720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693121869 (or 693121863 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 166349244720 in words is "one hundred sixty-six billion, three hundred forty-nine million, two hundred forty-four thousand, seven hundred twenty".