812436374387 has 8 divisors (see below), whose sum is σ = 886412379072. Its totient is φ = 738480061800.

The previous prime is 812436374359. The next prime is 812436374483. The reversal of 812436374387 is 783473634218.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812436374387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (812436374317) 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 7 ways as a sum of consecutive naturals, for example, 4836689 + ... + 5001842.

It is an arithmetic number, because the mean of its divisors is an integer number (110801547384).

Almost surely, 2^812436374387 is an apocalyptic number.

812436374387 is a deficient number, since it is larger than the sum of its proper divisors (73976004685).

812436374387 is a wasteful number, since it uses less digits than its factorization.

812436374387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9846049.

The product of its digits is 16257024, while the sum is 56.

The spelling of 812436374387 in words is "eight hundred twelve billion, four hundred thirty-six million, three hundred seventy-four thousand, three hundred eighty-seven".