16754972481 has 27 divisors (see below), whose sum is σ = 26214393699. Its totient is φ = 10307645712.

The previous prime is 16754972471. The next prime is 16754972491. The reversal of 16754972481 is 18427945761.

The square root of 16754972481 is 129441.

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

16754972481 is a `hidden beast` number, since 1 + 6 + 75 + 4 + 97 + 2 + 481 = 666.

It is an interprime number because it is at equal distance from previous prime (16754972471) and next prime (16754972491).

It can be written as a sum of positive squares in only one way, i.e., 2478546225 + 14276426256 = 49785^2 + 119484^2 .

It is not a de Polignac number, because 16754972481 - 2⁹ = 16754971969 is a prime.

It is a super-2 number, since 2×16754972481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16754972431) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5046540 + ... + 5049858.

Almost surely, 2^16754972481 is an apocalyptic number.

16754972481 is the 129441-st square number.

16754972481 is the 64721-st centered octagonal number.

It is an amenable number.

16754972481 is a deficient number, since it is larger than the sum of its proper divisors (9459421218).

16754972481 is an frugal number, since it uses more digits than its factorization.

16754972481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670 (or 3335 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The spelling of 16754972481 in words is "sixteen billion, seven hundred fifty-four million, nine hundred seventy-two thousand, four hundred eighty-one".