812988116081 has 16 divisors (see below), whose sum is σ = 833764241856. Its totient is φ = 792257760000.

The previous prime is 812988115991. The next prime is 812988116093. The reversal of 812988116081 is 180611889218.

It is not a de Polignac number, because 812988116081 - 2¹⁴ = 812988099697 is a prime.

It is a super-2 number, since 2×812988116081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (812988116581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220260446 + ... + 220264136.

It is an arithmetic number, because the mean of its divisors is an integer number (52110265116).

Almost surely, 2^812988116081 is an apocalyptic number.

It is an amenable number.

812988116081 is a deficient number, since it is larger than the sum of its proper divisors (20776125775).

812988116081 is a wasteful number, since it uses less digits than its factorization.

812988116081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8384.

The product of its (nonzero) digits is 442368, while the sum is 53.

The spelling of 812988116081 in words is "eight hundred twelve billion, nine hundred eighty-eight million, one hundred sixteen thousand, eighty-one".