16673551920 has 480 divisors, whose sum is σ = 61421068800. Its totient is φ = 4195141632.

The previous prime is 16673551913. The next prime is 16673551931. The reversal of 16673551920 is 2915537661.

16673551920 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 3 + 551 + 92 + 0 = 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 95 ways as a sum of consecutive naturals, for example, 39793471 + ... + 39793889.

It is an arithmetic number, because the mean of its divisors is an integer number (127960560).

Almost surely, 2^16673551920 is an apocalyptic number.

16673551920 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 16673551920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30710534400).

16673551920 is an abundant number, since it is smaller than the sum of its proper divisors (44747516880).

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

16673551920 is a wasteful number, since it uses less digits than its factorization.

16673551920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 16673551920 in words is "sixteen billion, six hundred seventy-three million, five hundred fifty-one thousand, nine hundred twenty".