16812541808172 has 48 divisors (see below), whose sum is σ = 47550623299200. Its totient is φ = 5094709638480.

The previous prime is 16812541808107. The next prime is 16812541808201. The reversal of 16812541808172 is 27180814521861.

16812541808172 is a `hidden beast` number, since 1 + 6 + 8 + 1 + 2 + 541 + 80 + 8 + 17 + 2 = 666.

16812541808172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 7075984422 + ... + 7075986797.

It is an arithmetic number, because the mean of its divisors is an integer number (990637985400).

Almost surely, 2^{16812541808172} is an apocalyptic number.

16812541808172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16812541808172 is an abundant number, since it is smaller than the sum of its proper divisors (30738081491028).

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

16812541808172 is a wasteful number, since it uses less digits than its factorization.

16812541808172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151971243 (or 14151971235 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 54.

The spelling of 16812541808172 in words is "sixteen trillion, eight hundred twelve billion, five hundred forty-one million, eight hundred eight thousand, one hundred seventy-two".