16727725881 has 8 divisors (see below), whose sum is σ = 24781816160. Its totient is φ = 11151817236.

The previous prime is 16727725877. The next prime is 16727725901. The reversal of 16727725881 is 18852772761.

It is not a de Polignac number, because 16727725881 - 2² = 16727725877 is a prime.

It is a super-2 number, since 2×16727725881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16727725181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309772675 + ... + 309772728.

It is an arithmetic number, because the mean of its divisors is an integer number (3097727020).

Almost surely, 2^16727725881 is an apocalyptic number.

It is an amenable number.

16727725881 is a deficient number, since it is larger than the sum of its proper divisors (8054090279).

16727725881 is an equidigital number, since it uses as much as digits as its factorization.

16727725881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619545412 (or 619545406 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 54.

The spelling of 16727725881 in words is "sixteen billion, seven hundred twenty-seven million, seven hundred twenty-five thousand, eight hundred eighty-one".