812357783168 has 64 divisors (see below), whose sum is σ = 1705453643520. Its totient is φ = 384672076800.

The previous prime is 812357783161. The next prime is 812357783177. The reversal of 812357783168 is 861387753218.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (812357783161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068680 + ... + 1663367.

It is an arithmetic number, because the mean of its divisors is an integer number (26647713180).

Almost surely, 2^812357783168 is an apocalyptic number.

It is an amenable number.

812357783168 is an abundant number, since it is smaller than the sum of its proper divisors (893095860352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812357783168 is a wasteful number, since it uses less digits than its factorization.

812357783168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732185 (or 2732173 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 59.

The spelling of 812357783168 in words is "eight hundred twelve billion, three hundred fifty-seven million, seven hundred eighty-three thousand, one hundred sixty-eight".