164216541990 has 16 divisors (see below), whose sum is σ = 394119700848. Its totient is φ = 43791077856.

The previous prime is 164216541989. The next prime is 164216542001. The reversal of 164216541990 is 99145612461.

164216541990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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, 2736942337 + ... + 2736942396.

It is an arithmetic number, because the mean of its divisors is an integer number (24632481303).

Almost surely, 2^164216541990 is an apocalyptic number.

164216541990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164216541990 is an abundant number, since it is smaller than the sum of its proper divisors (229903158858).

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

164216541990 is a wasteful number, since it uses less digits than its factorization.

164216541990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473884743.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 164216541990 in words is "one hundred sixty-four billion, two hundred sixteen million, five hundred forty-one thousand, nine hundred ninety".