16545171233020 has 48 divisors (see below), whose sum is σ = 35094931099200. Its totient is φ = 6551530546176.

The previous prime is 16545171232991. The next prime is 16545171233027. The reversal of 16545171233020 is 2033217154561.

It is a super-2 number, since 2×16545171233020² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545171233027) 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 15 ways as a sum of consecutive naturals, for example, 2587695 + ... + 6307654.

It is an arithmetic number, because the mean of its divisors is an integer number (731144397900).

Almost surely, 2^{16545171233020} is an apocalyptic number.

16545171233020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16545171233020 is an abundant number, since it is smaller than the sum of its proper divisors (18549759866180).

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

16545171233020 is a wasteful number, since it uses less digits than its factorization.

16545171233020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896294 (or 8896292 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

Adding to 16545171233020 its reverse (2033217154561), we get a palindrome (18578388387581).

The spelling of 16545171233020 in words is "sixteen trillion, five hundred forty-five billion, one hundred seventy-one million, two hundred thirty-three thousand, twenty".