16838978515260 has 384 divisors, whose sum is σ = 52371754896384. Its totient is φ = 4008538275840.

The previous prime is 16838978515217. The next prime is 16838978515277. The reversal of 16838978515260 is 6251587983861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8348525772 + ... + 8348527788.

It is an arithmetic number, because the mean of its divisors is an integer number (136384778376).

Almost surely, 2^{16838978515260} is an apocalyptic number.

16838978515260 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 16838978515260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26185877448192).

16838978515260 is an abundant number, since it is smaller than the sum of its proper divisors (35532776381124).

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

16838978515260 is a wasteful number, since it uses less digits than its factorization.

16838978515260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 69.

The spelling of 16838978515260 in words is "sixteen trillion, eight hundred thirty-eight billion, nine hundred seventy-eight million, five hundred fifteen thousand, two hundred sixty".