16906643472 has 20 divisors (see below), whose sum is σ = 43675495760. Its totient is φ = 5635547808.

The previous prime is 16906643459. The next prime is 16906643527. The reversal of 16906643472 is 27434660961.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 352221739 = 16906643472 / (1 + 6 + 9 + 0 + 6 + 6 + 4 + 3 + 4 + 7 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176110822 + ... + 176110917.

It is an arithmetic number, because the mean of its divisors is an integer number (2183774788).

Almost surely, 2^16906643472 is an apocalyptic number.

16906643472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16906643472 is an abundant number, since it is smaller than the sum of its proper divisors (26768852288).

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

16906643472 is a wasteful number, since it uses less digits than its factorization.

16906643472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352221750 (or 352221744 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 16906643472 in words is "sixteen billion, nine hundred six million, six hundred forty-three thousand, four hundred seventy-two".