812475478583 has 4 divisors (see below), whose sum is σ = 827805204648. Its totient is φ = 797145752520.

The previous prime is 812475478571. The next prime is 812475478609. The reversal of 812475478583 is 385874574218.

It is a happy number.

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 812475478583 - 2⁸ = 812475478327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812475478513) 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, 7664862953 + ... + 7664863058.

It is an arithmetic number, because the mean of its divisors is an integer number (206951301162).

Almost surely, 2^812475478583 is an apocalyptic number.

812475478583 is a deficient number, since it is larger than the sum of its proper divisors (15329726065).

812475478583 is a wasteful number, since it uses less digits than its factorization.

812475478583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15329726064.

The product of its digits is 60211200, while the sum is 62.

The spelling of 812475478583 in words is "eight hundred twelve billion, four hundred seventy-five million, four hundred seventy-eight thousand, five hundred eighty-three".