823019912976 has 80 divisors (see below), whose sum is σ = 2153553128064. Its totient is φ = 270818936832.

The previous prime is 823019912929. The next prime is 823019912989. The reversal of 823019912976 is 679219910328.

It is a super-2 number, since 2×823019912976² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1304680 + ... + 1829816.

Almost surely, 2^823019912976 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 823019912976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076776564032).

823019912976 is an abundant number, since it is smaller than the sum of its proper divisors (1330533215088).

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

823019912976 is a wasteful number, since it uses less digits than its factorization.

823019912976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525568 (or 525562 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 57.

The spelling of 823019912976 in words is "eight hundred twenty-three billion, nineteen million, nine hundred twelve thousand, nine hundred seventy-six".