41640075481 has 3 divisors (see below), whose sum is σ = 41640279541. Its totient is φ = 41639871422.

The previous prime is 41640075479. The next prime is 41640075487. The reversal of 41640075481 is 18457004614.

The square root of 41640075481 is 204059.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18457004614 = 2 ⋅9228502307.

It is not a de Polignac number, because 41640075481 - 2¹ = 41640075479 is a prime.

It is a super-2 number, since 2×41640075481² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41640075487) 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 2 ways as a sum of consecutive naturals, for example, 102030 + ... + 306088.

Almost surely, 2^41640075481 is an apocalyptic number.

41640075481 is the 204059-th square number.

41640075481 is the 102030-th centered octagonal number.

It is an amenable number.

41640075481 is a deficient number, since it is larger than the sum of its proper divisors (204060).

41640075481 is an frugal number, since it uses more digits than its factorization.

41640075481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408118 (or 204059 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 41640075481 in words is "forty-one billion, six hundred forty million, seventy-five thousand, four hundred eighty-one".