1605489504843 has 16 divisors (see below), whose sum is σ = 2512580744960. Its totient is φ = 892627369056.

The previous prime is 1605489504833. The next prime is 1605489504859. The reversal of 1605489504843 is 3484059845061.

It is not a de Polignac number, because 1605489504843 - 2⁸ = 1605489504587 is a prime.

It is a super-2 number, since 2×1605489504843² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1605489504833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1033132753 + ... + 1033134306.

It is an arithmetic number, because the mean of its divisors is an integer number (157036296560).

Almost surely, 2^{1605489504843} is an apocalyptic number.

1605489504843 is a deficient number, since it is larger than the sum of its proper divisors (907091240117).

1605489504843 is a wasteful number, since it uses less digits than its factorization.

1605489504843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066267106.

The product of its (nonzero) digits is 16588800, while the sum is 57.

The spelling of 1605489504843 in words is "one trillion, six hundred five billion, four hundred eighty-nine million, five hundred four thousand, eight hundred forty-three".