16345120220 has 96 divisors (see below), whose sum is σ = 42697803456. Its totient is φ = 5163724800.

The previous prime is 16345120219. The next prime is 16345120241. The reversal of 16345120220 is 2202154361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 16345120220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119471 + ... + 216710.

It is an arithmetic number, because the mean of its divisors is an integer number (444768786).

Almost surely, 2^16345120220 is an apocalyptic number.

16345120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16345120220 is an abundant number, since it is smaller than the sum of its proper divisors (26352683236).

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

16345120220 is a wasteful number, since it uses less digits than its factorization.

16345120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336231 (or 336229 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 16345120220 its reverse (2202154361), we get a palindrome (18547274581).

The spelling of 16345120220 in words is "sixteen billion, three hundred forty-five million, one hundred twenty thousand, two hundred twenty".