166808530084 has 27 divisors (see below), whose sum is σ = 339586148097. Its totient is φ = 71486919504.

The previous prime is 166808530081. The next prime is 166808530093. The reversal of 166808530084 is 480035808661.

The square root of 166808530084 is 408422.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13714752100 + 153093777984 = 117110^2 + 391272^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (166808530081) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5703322 + ... + 5732494.

Almost surely, 2^166808530084 is an apocalyptic number.

166808530084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166808530084 is the 408422-nd square number.

It is an amenable number.

166808530084 is an abundant number, since it is smaller than the sum of its proper divisors (172777618013).

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

166808530084 is an frugal number, since it uses more digits than its factorization.

166808530084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58364 (or 29182 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

Multiplying 166808530084 by its sum of digits (49), we get a square (8173617974116 = 2858954²).

166808530084 divided by its sum of digits (49) gives a square (3404255716 = 58346²).

The spelling of 166808530084 in words is "one hundred sixty-six billion, eight hundred eight million, five hundred thirty thousand, eighty-four".