16720383387 has 8 divisors (see below), whose sum is σ = 22626588736. Its totient is φ = 10980550152.

The previous prime is 16720383367. The next prime is 16720383391. The reversal of 16720383387 is 78338302761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16720383387 - 2¹⁴ = 16720367003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16720383367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41592793 + ... + 41593194.

It is an arithmetic number, because the mean of its divisors is an integer number (2828323592).

Almost surely, 2^16720383387 is an apocalyptic number.

16720383387 is a deficient number, since it is larger than the sum of its proper divisors (5906205349).

16720383387 is an equidigital number, since it uses as much as digits as its factorization.

16720383387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83186057.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 16720383387 in words is "sixteen billion, seven hundred twenty million, three hundred eighty-three thousand, three hundred eighty-seven".