30705680166 has 48 divisors (see below), whose sum is σ = 72608857200. Its totient is φ = 8629225920.

The previous prime is 30705680119. The next prime is 30705680167. The reversal of 30705680166 is 66108650703.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30705680167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 838141 + ... + 874008.

It is an arithmetic number, because the mean of its divisors is an integer number (1512684525).

Almost surely, 2^30705680166 is an apocalyptic number.

30705680166 is an abundant number, since it is smaller than the sum of its proper divisors (41903177034).

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

30705680166 is a wasteful number, since it uses less digits than its factorization.

30705680166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712229 (or 1712222 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 30705680166 in words is "thirty billion, seven hundred five million, six hundred eighty thousand, one hundred sixty-six".