812279637362 has 6 divisors (see below), whose sum is σ = 1218421367919. Its totient is φ = 406139181390.

The previous prime is 812279637331. The next prime is 812279637371. The reversal of 812279637362 is 263736972218.

It can be written as a sum of positive squares in only one way, i.e., 406139818681 + 406139818681 = 637291^2 + 637291^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=637291.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 812279637298 and 812279637307.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 955937 + ... + 1593227.

Almost surely, 2^812279637362 is an apocalyptic number.

812279637362 is a deficient number, since it is larger than the sum of its proper divisors (406141730557).

812279637362 is an frugal number, since it uses more digits than its factorization.

812279637362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274584 (or 637293 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 56.

The spelling of 812279637362 in words is "eight hundred twelve billion, two hundred seventy-nine million, six hundred thirty-seven thousand, three hundred sixty-two".