815159341223 has 4 divisors (see below), whose sum is σ = 815171751240. Its totient is φ = 815146931208.

The previous prime is 815159341219. The next prime is 815159341231. The reversal of 815159341223 is 322143951518.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 815159341223 - 2² = 815159341219 is a prime.

It is a super-3 number, since 3×815159341223³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815159341723) 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, 6105953 + ... + 6238026.

It is an arithmetic number, because the mean of its divisors is an integer number (203792937810).

Almost surely, 2^815159341223 is an apocalyptic number.

815159341223 is a deficient number, since it is larger than the sum of its proper divisors (12410017).

815159341223 is a wasteful number, since it uses less digits than its factorization.

815159341223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12410016.

The product of its digits is 259200, while the sum is 44.

The spelling of 815159341223 in words is "eight hundred fifteen billion, one hundred fifty-nine million, three hundred forty-one thousand, two hundred twenty-three".