16700390203 has 4 divisors (see below), whose sum is σ = 19086160240. Its totient is φ = 14314620168.

The previous prime is 16700390177. The next prime is 16700390257. The reversal of 16700390203 is 30209300761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30209300761 = 139 ⋅217333099.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16700390203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16700390503) 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, 1192885008 + ... + 1192885021.

It is an arithmetic number, because the mean of its divisors is an integer number (4771540060).

Almost surely, 2^16700390203 is an apocalyptic number.

16700390203 is a deficient number, since it is larger than the sum of its proper divisors (2385770037).

16700390203 is an equidigital number, since it uses as much as digits as its factorization.

16700390203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385770036.

The product of its (nonzero) digits is 6804, while the sum is 31.

Adding to 16700390203 its reverse (30209300761), we get a palindrome (46909690964).

The spelling of 16700390203 in words is "sixteen billion, seven hundred million, three hundred ninety thousand, two hundred three".