816434434618 has 16 divisors (see below), whose sum is σ = 1336108527360. Its totient is φ = 371071864800.

The previous prime is 816434434579. The next prime is 816434434661.

816434434618 is nontrivially palindromic in base 10.

816434434618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493418 + ... + 1965493.

It is an arithmetic number, because the mean of its divisors is an integer number (83506782960).

Almost surely, 2^816434434618 is an apocalyptic number.

816434434618 is a deficient number, since it is larger than the sum of its proper divisors (519674092742).

816434434618 is a wasteful number, since it uses less digits than its factorization.

816434434618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469653.

The product of its digits is 5308416, while the sum is 52.

The spelling of 816434434618 in words is "eight hundred sixteen billion, four hundred thirty-four million, four hundred thirty-four thousand, six hundred eighteen".