16448369220 has 96 divisors (see below), whose sum is σ = 51432796800. Its totient is φ = 4363938432.

The previous prime is 16448369219. The next prime is 16448369237. The reversal of 16448369220 is 2296384461.

16448369220 is a `hidden beast` number, since 1 + 64 + 4 + 8 + 369 + 220 = 666.

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

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, 29071 + ... + 183689.

It is an arithmetic number, because the mean of its divisors is an integer number (535758300).

Almost surely, 2^16448369220 is an apocalyptic number.

16448369220 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 16448369220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25716398400).

16448369220 is an abundant number, since it is smaller than the sum of its proper divisors (34984427580).

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

16448369220 is a wasteful number, since it uses less digits than its factorization.

16448369220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154834 (or 154826 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 16448369220 in words is "sixteen billion, four hundred forty-eight million, three hundred sixty-nine thousand, two hundred twenty".