16481673220 has 24 divisors (see below), whose sum is σ = 34720711704. Its totient is φ = 6571869696.

The previous prime is 16481673193. The next prime is 16481673227. The reversal of 16481673220 is 2237618461.

It can be written as a sum of positive squares in 4 ways, for example, as 2749114624 + 13732558596 = 52432^2 + 117186^2 .

It is not an unprimeable number, because it can be changed into a prime (16481673227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293477 + ... + 1306156.

It is an arithmetic number, because the mean of its divisors is an integer number (1446696321).

Almost surely, 2^16481673220 is an apocalyptic number.

16481673220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16481673220 is an abundant number, since it is smaller than the sum of its proper divisors (18239038484).

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

16481673220 is a wasteful number, since it uses less digits than its factorization.

16481673220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599959 (or 2599957 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 16481673220 in words is "sixteen billion, four hundred eighty-one million, six hundred seventy-three thousand, two hundred twenty".