16355445532681 has 16 divisors (see below), whose sum is σ = 17055104601600. Its totient is φ = 15673931843328.

The previous prime is 16355445532669. The next prime is 16355445532703. The reversal of 16355445532681 is 18623554455361.

It is a cyclic number.

It is not a de Polignac number, because 16355445532681 - 2⁷ = 16355445532553 is a prime.

It is a super-2 number, since 2×16355445532681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16355445532631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18549636 + ... + 19411333.

It is an arithmetic number, because the mean of its divisors is an integer number (1065944037600).

Almost surely, 2^{16355445532681} is an apocalyptic number.

It is an amenable number.

16355445532681 is a deficient number, since it is larger than the sum of its proper divisors (699659068919).

16355445532681 is a wasteful number, since it uses less digits than its factorization.

16355445532681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37961208.

The product of its digits is 51840000, while the sum is 58.

The spelling of 16355445532681 in words is "sixteen trillion, three hundred fifty-five billion, four hundred forty-five million, five hundred thirty-two thousand, six hundred eighty-one".