5404663561 has 12 divisors (see below), whose sum is σ = 6145517700. Its totient is φ = 4743902240.

The previous prime is 5404663549. The next prime is 5404663567. The reversal of 5404663561 is 1653664045.

It can be written as a sum of positive squares in 2 ways, for example, as 2640007161 + 2764656400 = 51381^2 + 52580^2 .

It is not a de Polignac number, because 5404663561 - 2⁹ = 5404663049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5404663567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 766606 + ... + 773623.

It is an arithmetic number, because the mean of its divisors is an integer number (512126475).

Almost surely, 2^5404663561 is an apocalyptic number.

It is an amenable number.

5404663561 is a deficient number, since it is larger than the sum of its proper divisors (740854139).

5404663561 is a wasteful number, since it uses less digits than its factorization.

5404663561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540280 (or 1540269 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 5404663561 is about 73516.4169488693. The cubic root of 5404663561 is about 1754.9155470544.

The spelling of 5404663561 in words is "five billion, four hundred four million, six hundred sixty-three thousand, five hundred sixty-one".