199309316220 has 144 divisors (see below), whose sum is σ = 691353062400. Its totient is φ = 45529112448.

The previous prime is 199309316207. The next prime is 199309316237. The reversal of 199309316220 is 22613903991.

199309316220 is a `hidden beast` number, since 1 + 9 + 9 + 309 + 316 + 2 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2094189 + ... + 2187291.

Almost surely, 2^199309316220 is an apocalyptic number.

199309316220 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 199309316220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345676531200).

199309316220 is an abundant number, since it is smaller than the sum of its proper divisors (492043746180).

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

199309316220 is a wasteful number, since it uses less digits than its factorization.

199309316220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94824 (or 94819 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 199309316220 in words is "one hundred ninety-nine billion, three hundred nine million, three hundred sixteen thousand, two hundred twenty".