16823022840 has 320 divisors, whose sum is σ = 61138899360. Its totient is φ = 4124390400.

The previous prime is 16823022829. The next prime is 16823022851. The reversal of 16823022840 is 4822032861.

16823022840 is a `hidden beast` number, since 168 + 230 + 228 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (16823022829) and next prime (16823022851).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16823022795 and 16823022804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12930190 + ... + 12931490.

Almost surely, 2^16823022840 is an apocalyptic number.

16823022840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16823022840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30569449680).

16823022840 is an abundant number, since it is smaller than the sum of its proper divisors (44315876520).

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

16823022840 is a wasteful number, since it uses less digits than its factorization.

16823022840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 16823022840 in words is "sixteen billion, eight hundred twenty-three million, twenty-two thousand, eight hundred forty".