816460821203 has 16 divisors (see below), whose sum is σ = 832036108800. Its totient is φ = 801006490944.

The previous prime is 816460821199. The next prime is 816460821221. The reversal of 816460821203 is 302128064618.

It is a cyclic number.

It is not a de Polignac number, because 816460821203 - 2² = 816460821199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816460821263) 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 15 ways as a sum of consecutive naturals, for example, 80808650 + ... + 80818752.

It is an arithmetic number, because the mean of its divisors is an integer number (52002256800).

Almost surely, 2^816460821203 is an apocalyptic number.

816460821203 is a deficient number, since it is larger than the sum of its proper divisors (15575287597).

816460821203 is a wasteful number, since it uses less digits than its factorization.

816460821203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15938.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 816460821203 in words is "eight hundred sixteen billion, four hundred sixty million, eight hundred twenty-one thousand, two hundred three".