812113809763 has 16 divisors (see below), whose sum is σ = 854536832640. Its totient is φ = 771075475456.

The previous prime is 812113809751. The next prime is 812113809779. The reversal of 812113809763 is 367908311218.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 812113809763 - 2¹³ = 812113801571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812113804763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609870 + ... + 2053267.

It is an arithmetic number, because the mean of its divisors is an integer number (53408552040).

Almost surely, 2^812113809763 is an apocalyptic number.

812113809763 is a deficient number, since it is larger than the sum of its proper divisors (42423022877).

812113809763 is a wasteful number, since it uses less digits than its factorization.

812113809763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663326.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 812113809763 in words is "eight hundred twelve billion, one hundred thirteen million, eight hundred nine thousand, seven hundred sixty-three".