405696490241 has 36 divisors (see below), whose sum is σ = 484493571540. Its totient is φ = 338694229440.

The previous prime is 405696490229. The next prime is 405696490247. The reversal of 405696490241 is 142094696504.

It can be written as a sum of positive squares in 2 ways, for example, as 262266894400 + 143429595841 = 512120^2 + 378721^2 .

It is not a de Polignac number, because 405696490241 - 2³⁸ = 130818583297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 405696490241.

It is not an unprimeable number, because it can be changed into a prime (405696490247) 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 35 ways as a sum of consecutive naturals, for example, 18581111 + ... + 18602931.

It is an arithmetic number, because the mean of its divisors is an integer number (13458154765).

Almost surely, 2^405696490241 is an apocalyptic number.

It is an amenable number.

405696490241 is a deficient number, since it is larger than the sum of its proper divisors (78797081299).

405696490241 is a wasteful number, since it uses less digits than its factorization.

405696490241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22062 (or 21996 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 405696490241 in words is "four hundred five billion, six hundred ninety-six million, four hundred ninety thousand, two hundred forty-one".