166389351100 has 72 divisors (see below), whose sum is σ = 413052312960. Its totient is φ = 56991549120.

The previous prime is 166389351059. The next prime is 166389351103. The reversal of 166389351100 is 1153983661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166389351103) 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, 596667 + ... + 829933.

It is an arithmetic number, because the mean of its divisors is an integer number (5736837680).

Almost surely, 2^166389351100 is an apocalyptic number.

166389351100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166389351100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206526156480).

166389351100 is an abundant number, since it is smaller than the sum of its proper divisors (246662961860).

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

166389351100 is a wasteful number, since it uses less digits than its factorization.

166389351100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234307 (or 234300 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 166389351100 in words is "one hundred sixty-six billion, three hundred eighty-nine million, three hundred fifty-one thousand, one hundred".