16809674152920 has 512 divisors, whose sum is σ = 57609584640000. Its totient is φ = 3886751232000.

The previous prime is 16809674152877. The next prime is 16809674152927. The reversal of 16809674152920 is 2925147690861.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16809674152927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1936370980 + ... + 1936379660.

It is an arithmetic number, because the mean of its divisors is an integer number (112518720000).

Almost surely, 2^{16809674152920} is an apocalyptic number.

16809674152920 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 16809674152920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28804792320000).

16809674152920 is an abundant number, since it is smaller than the sum of its proper divisors (40799910487080).

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

16809674152920 is a wasteful number, since it uses less digits than its factorization.

16809674152920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9415 (or 9411 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 16809674152920 in words is "sixteen trillion, eight hundred nine billion, six hundred seventy-four million, one hundred fifty-two thousand, nine hundred twenty".