823990933080 has 768 divisors, whose sum is σ = 3208290508800. Its totient is φ = 179462062080.

The previous prime is 823990933037. The next prime is 823990933091. The reversal of 823990933080 is 80339099328.

It is a super-2 number, since 2×823990933080² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2374613467 + ... + 2374613813.

It is an arithmetic number, because the mean of its divisors is an integer number (4177461600).

Almost surely, 2^823990933080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 823990933080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604145254400).

823990933080 is an abundant number, since it is smaller than the sum of its proper divisors (2384299575720).

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

823990933080 is a wasteful number, since it uses less digits than its factorization.

823990933080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 823990933080 in words is "eight hundred twenty-three billion, nine hundred ninety million, nine hundred thirty-three thousand, eighty".