16840922868 has 240 divisors, whose sum is σ = 55136366208. Its totient is φ = 4354560000.

The previous prime is 16840922863. The next prime is 16840922869. The reversal of 16840922868 is 86822904861.

16840922868 is a `hidden beast` number, since 1 + 6 + 8 + 409 + 228 + 6 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16840922863) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6011068 + ... + 6013868.

Almost surely, 2^16840922868 is an apocalyptic number.

16840922868 is a gapful number since it is divisible by the number (18) 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 16840922868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27568183104).

16840922868 is an abundant number, since it is smaller than the sum of its proper divisors (38295443340).

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

16840922868 is a wasteful number, since it uses less digits than its factorization.

16840922868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076 (or 3065 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 16840922868 in words is "sixteen billion, eight hundred forty million, nine hundred twenty-two thousand, eight hundred sixty-eight".