16720573371 has 4 divisors (see below), whose sum is σ = 22294097832. Its totient is φ = 11147048912.

The previous prime is 16720573367. The next prime is 16720573381. The reversal of 16720573371 is 17337502761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16720573371 - 2² = 16720573367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16720573321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2786762226 + ... + 2786762231.

It is an arithmetic number, because the mean of its divisors is an integer number (5573524458).

Almost surely, 2^16720573371 is an apocalyptic number.

16720573371 is a deficient number, since it is larger than the sum of its proper divisors (5573524461).

16720573371 is an equidigital number, since it uses as much as digits as its factorization.

16720573371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573524460.

The product of its (nonzero) digits is 185220, while the sum is 42.

The spelling of 16720573371 in words is "sixteen billion, seven hundred twenty million, five hundred seventy-three thousand, three hundred seventy-one".