16811947388080 has 80 divisors (see below), whose sum is σ = 42362648241984. Its totient is φ = 6167950064640.

The previous prime is 16811947388077. The next prime is 16811947388149. The reversal of 16811947388080 is 8088374911861.

16811947388080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51318676 + ... + 51645235.

Almost surely, 2^{16811947388080} is an apocalyptic number.

16811947388080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16811947388080 is an abundant number, since it is smaller than the sum of its proper divisors (25550700853904).

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

16811947388080 is a wasteful number, since it uses less digits than its factorization.

16811947388080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102964094 (or 102964088 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 64.

The spelling of 16811947388080 in words is "sixteen trillion, eight hundred eleven billion, nine hundred forty-seven million, three hundred eighty-eight thousand, eighty".