814081346813 has 12 divisors (see below), whose sum is σ = 947019568572. Its totient is φ = 697764130560.

The previous prime is 814081346809. The next prime is 814081346899. The reversal of 814081346813 is 318643180418.

It can be written as a sum of positive squares in 2 ways, for example, as 449601093529 + 364480253284 = 670523^2 + 603722^2 .

It is not a de Polignac number, because 814081346813 - 2² = 814081346809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814081346713) 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 11 ways as a sum of consecutive naturals, for example, 1653083 + ... + 2088263.

It is an arithmetic number, because the mean of its divisors is an integer number (78918297381).

Almost surely, 2^814081346813 is an apocalyptic number.

It is an amenable number.

814081346813 is a deficient number, since it is larger than the sum of its proper divisors (132938221759).

814081346813 is a wasteful number, since it uses less digits than its factorization.

814081346813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473372 (or 473365 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 814081346813 in words is "eight hundred fourteen billion, eighty-one million, three hundred forty-six thousand, eight hundred thirteen".