168212089830 has 64 divisors (see below), whose sum is σ = 412003480320. Its totient is φ = 43940328576.

The previous prime is 168212089807. The next prime is 168212089861. The reversal of 168212089830 is 38980212861.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 168212089830.

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, 333004 + ... + 668816.

It is an arithmetic number, because the mean of its divisors is an integer number (6437554380).

Almost surely, 2^168212089830 is an apocalyptic number.

168212089830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 168212089830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206001740160).

168212089830 is an abundant number, since it is smaller than the sum of its proper divisors (243791390490).

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

168212089830 is a wasteful number, since it uses less digits than its factorization.

168212089830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336165.

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 168212089830 in words is "one hundred sixty-eight billion, two hundred twelve million, eighty-nine thousand, eight hundred thirty".