812063229381 has 16 divisors (see below), whose sum is σ = 1203075158400. Its totient is φ = 541367151264.

The previous prime is 812063229361. The next prime is 812063229407. The reversal of 812063229381 is 183922360218.

812063229381 is a `hidden beast` number, since 8 + 1 + 2 + 0 + 632 + 2 + 9 + 3 + 8 + 1 = 666.

It is not a de Polignac number, because 812063229381 - 2¹⁰ = 812063228357 is a prime.

It is a super-2 number, since 2×812063229381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812063229361) 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, 1917240 + ... + 2302158.

It is an arithmetic number, because the mean of its divisors is an integer number (75192197400).

Almost surely, 2^812063229381 is an apocalyptic number.

It is an amenable number.

812063229381 is a deficient number, since it is larger than the sum of its proper divisors (391011929019).

812063229381 is a wasteful number, since it uses less digits than its factorization.

812063229381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463065 (or 463059 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

Adding to 812063229381 its reverse (183922360218), we get a palindrome (995985589599).

The spelling of 812063229381 in words is "eight hundred twelve billion, sixty-three million, two hundred twenty-nine thousand, three hundred eighty-one".