16811113913280 has 448 divisors, whose sum is σ = 62526554956800. Its totient is φ = 4240261509120.

The previous prime is 16811113913273. The next prime is 16811113913311. The reversal of 16811113913280 is 8231931111861.

16811113913280 is a `hidden beast` number, since 168 + 11 + 11 + 391 + 3 + 2 + 80 = 666.

It is a super-2 number, since 2×16811113913280² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 103503814 + ... + 103666106.

Almost surely, 2^{16811113913280} is an apocalyptic number.

16811113913280 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 16811113913280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31263277478400).

16811113913280 is an abundant number, since it is smaller than the sum of its proper divisors (45715441043520).

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

16811113913280 is a wasteful number, since it uses less digits than its factorization.

16811113913280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162969 (or 162953 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The spelling of 16811113913280 in words is "sixteen trillion, eight hundred eleven billion, one hundred thirteen million, nine hundred thirteen thousand, two hundred eighty".