814975643471 has 4 divisors (see below), whose sum is σ = 889064338344. Its totient is φ = 740886948600.

The previous prime is 814975643453. The next prime is 814975643483. The reversal of 814975643471 is 174346579418.

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 814975643471 - 2⁶ = 814975643407 is a prime.

It is a super-3 number, since 3×814975643471³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 814975643471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814975643431) 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 3 ways as a sum of consecutive naturals, for example, 37044347420 + ... + 37044347441.

It is an arithmetic number, because the mean of its divisors is an integer number (222266084586).

Almost surely, 2^814975643471 is an apocalyptic number.

814975643471 is a deficient number, since it is larger than the sum of its proper divisors (74088694873).

814975643471 is a wasteful number, since it uses less digits than its factorization.

814975643471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74088694872.

The product of its digits is 20321280, while the sum is 59.

The spelling of 814975643471 in words is "eight hundred fourteen billion, nine hundred seventy-five million, six hundred forty-three thousand, four hundred seventy-one".