812551584407 has 8 divisors (see below), whose sum is σ = 836727881472. Its totient is φ = 788582809600.

The previous prime is 812551584343. The next prime is 812551584517. The reversal of 812551584407 is 704485155218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 812551584407 - 2⁶ = 812551584343 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 (812551584007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51872618 + ... + 51888279.

It is an arithmetic number, because the mean of its divisors is an integer number (104590985184).

Almost surely, 2^812551584407 is an apocalyptic number.

812551584407 is a deficient number, since it is larger than the sum of its proper divisors (24176297065).

812551584407 is a wasteful number, since it uses less digits than its factorization.

812551584407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103761129.

The product of its (nonzero) digits is 1792000, while the sum is 50.

The spelling of 812551584407 in words is "eight hundred twelve billion, five hundred fifty-one million, five hundred eighty-four thousand, four hundred seven".