822718872234 has 120 divisors (see below), whose sum is σ = 2145443748228. Its totient is φ = 234956816640.

The previous prime is 822718872211. The next prime is 822718872281. The reversal of 822718872234 is 432278817228.

822718872234 is a `hidden beast` number, since 8 + 227 + 188 + 7 + 2 + 234 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 795244815225 + 27474057009 = 891765^2 + 165753^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 18560722 + ... + 18604994.

Almost surely, 2^822718872234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822718872234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072721874114).

822718872234 is an abundant number, since it is smaller than the sum of its proper divisors (1322724875994).

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

822718872234 is a wasteful number, since it uses less digits than its factorization.

822718872234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46642 (or 46626 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The spelling of 822718872234 in words is "eight hundred twenty-two billion, seven hundred eighteen million, eight hundred seventy-two thousand, two hundred thirty-four".