16849900980 has 288 divisors, whose sum is σ = 57322556928. Its totient is φ = 4004732160.

The previous prime is 16849900961. The next prime is 16849900981. The reversal of 16849900980 is 8900994861.

16849900980 is a `hidden beast` number, since 1 + 68 + 499 + 0 + 0 + 98 + 0 = 666.

It is a super-3 number, since 3×16849900980³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16849900981) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12697077 + ... + 12698403.

It is an arithmetic number, because the mean of its divisors is an integer number (199036656).

Almost surely, 2^16849900980 is an apocalyptic number.

16849900980 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 16849900980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28661278464).

16849900980 is an abundant number, since it is smaller than the sum of its proper divisors (40472655948).

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

16849900980 is a wasteful number, since it uses less digits than its factorization.

16849900980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428 (or 1401 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 16849900980 in words is "sixteen billion, eight hundred forty-nine million, nine hundred thousand, nine hundred eighty".