409745448481 has 4 divisors (see below), whose sum is σ = 412873276464. Its totient is φ = 406617620500.

The previous prime is 409745448479. The next prime is 409745448487. The reversal of 409745448481 is 184844547904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 409745448481 - 2¹ = 409745448479 is a prime.

It is a super-2 number, since 2×409745448481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409745448487) 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 3 ways as a sum of consecutive naturals, for example, 1563913795 + ... + 1563914056.

It is an arithmetic number, because the mean of its divisors is an integer number (103218319116).

Almost surely, 2^409745448481 is an apocalyptic number.

It is an amenable number.

409745448481 is a deficient number, since it is larger than the sum of its proper divisors (3127827983).

409745448481 is a wasteful number, since it uses less digits than its factorization.

409745448481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127827982.

The product of its (nonzero) digits is 20643840, while the sum is 58.

The spelling of 409745448481 in words is "four hundred nine billion, seven hundred forty-five million, four hundred forty-eight thousand, four hundred eighty-one".