16271298481 has 9 divisors (see below), whose sum is σ = 16379026923. Its totient is φ = 16164276480.

The previous prime is 16271298473. The next prime is 16271298509. The reversal of 16271298481 is 18489217261.

The square root of 16271298481 is 127559.

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

It can be written as a sum of positive squares in only one way, i.e., 14687258481 + 1584040000 = 121191^2 + 39800^2 .

It is not a de Polignac number, because 16271298481 - 2³ = 16271298473 is a prime.

It is a super-2 number, since 2×16271298481² (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 (16271298431) 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 8 ways as a sum of consecutive naturals, for example, 25383921 + ... + 25384561.

Almost surely, 2^16271298481 is an apocalyptic number.

16271298481 is the 127559-th square number.

16271298481 is the 63780-th centered octagonal number.

It is an amenable number.

16271298481 is a deficient number, since it is larger than the sum of its proper divisors (107728442).

16271298481 is an frugal number, since it uses more digits than its factorization.

16271298481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680 (or 840 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

Multiplying 16271298481 by its sum of digits (49), we get a square (797293625569 = 892913²).

The spelling of 16271298481 in words is "sixteen billion, two hundred seventy-one million, two hundred ninety-eight thousand, four hundred eighty-one".