816487818433 has 8 divisors (see below), whose sum is σ = 933146091968. Its totient is φ = 699833834064.

The previous prime is 816487818431. The next prime is 816487818437. The reversal of 816487818433 is 334818784618.

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

It is a cyclic number.

It is not a de Polignac number, because 816487818433 - 2¹ = 816487818431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816487818431) 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, 653466 + ... + 1435267.

It is an arithmetic number, because the mean of its divisors is an integer number (116643261496).

Almost surely, 2^816487818433 is an apocalyptic number.

It is an amenable number.

816487818433 is a deficient number, since it is larger than the sum of its proper divisors (116658273535).

816487818433 is a wasteful number, since it uses less digits than its factorization.

816487818433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144583.

The product of its digits is 24772608, while the sum is 61.

The spelling of 816487818433 in words is "eight hundred sixteen billion, four hundred eighty-seven million, eight hundred eighteen thousand, four hundred thirty-three".