816003681347 has 4 divisors (see below), whose sum is σ = 816577121760. Its totient is φ = 815430240936.

The previous prime is 816003681329. The next prime is 816003681349. The reversal of 816003681347 is 743186300618.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743186300618 = 2 ⋅371593150309.

It is a cyclic number.

It is not a de Polignac number, because 816003681347 - 2¹⁶ = 816003615811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816003681349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286718072 + ... + 286720917.

It is an arithmetic number, because the mean of its divisors is an integer number (204144280440).

Almost surely, 2^816003681347 is an apocalyptic number.

816003681347 is a deficient number, since it is larger than the sum of its proper divisors (573440413).

816003681347 is a wasteful number, since it uses less digits than its factorization.

816003681347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573440412.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 816003681347 in words is "eight hundred sixteen billion, three million, six hundred eighty-one thousand, three hundred forty-seven".