16185881729472 has 168 divisors, whose sum is σ = 53649083665296. Its totient is φ = 4268803940352.

The previous prime is 16185881729471. The next prime is 16185881729509. The reversal of 16185881729472 is 27492718858161.

It is a tau number, because it is divible by the number of its divisors (168).

It is a junction number, because it is equal to n+sod(n) for n = 16185881729397 and 16185881729406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16185881729471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66048393 + ... + 66293000.

It is an arithmetic number, because the mean of its divisors is an integer number (319339783722).

Almost surely, 2^{16185881729472} is an apocalyptic number.

16185881729472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16185881729472 is an abundant number, since it is smaller than the sum of its proper divisors (37463201935824).

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

16185881729472 is a wasteful number, since it uses less digits than its factorization.

16185881729472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132341435 (or 132341418 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 69.

The spelling of 16185881729472 in words is "sixteen trillion, one hundred eighty-five billion, eight hundred eighty-one million, seven hundred twenty-nine thousand, four hundred seventy-two".