16746021881 has 16 divisors (see below), whose sum is σ = 17158179456. Its totient is φ = 16337682816.

The previous prime is 16746021871. The next prime is 16746021883. The reversal of 16746021881 is 18812064761.

16746021881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16746021881 is a prime.

It is a super-2 number, since 2×16746021881² (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 (16746021883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14398406 + ... + 14399568.

It is an arithmetic number, because the mean of its divisors is an integer number (1072386216).

Almost surely, 2^16746021881 is an apocalyptic number.

It is an amenable number.

16746021881 is a deficient number, since it is larger than the sum of its proper divisors (412157575).

16746021881 is a wasteful number, since it uses less digits than its factorization.

16746021881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 16746021881 in words is "sixteen billion, seven hundred forty-six million, twenty-one thousand, eight hundred eighty-one".