16055170681 has 9 divisors (see below), whose sum is σ = 17648951173. Its totient is φ = 14594342620.

The previous prime is 16055170679. The next prime is 16055170687. The reversal of 16055170681 is 18607155061.

The square root of 16055170681 is 126709.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 16055170681 - 2¹ = 16055170679 is a prime.

It is a super-2 number, since 2×16055170681² (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 (16055170687) 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 8 ways as a sum of consecutive naturals, for example, 1388040 + ... + 1399558.

Almost surely, 2^16055170681 is an apocalyptic number.

16055170681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16055170681 is the 126709-th square number.

16055170681 is the 63355-th centered octagonal number.

It is an amenable number.

16055170681 is a deficient number, since it is larger than the sum of its proper divisors (1593780492).

16055170681 is an frugal number, since it uses more digits than its factorization.

16055170681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23060 (or 11530 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 16055170681 in words is "sixteen billion, fifty-five million, one hundred seventy thousand, six hundred eighty-one".