5404647661 has 16 divisors (see below), whose sum is σ = 6279825024. Its totient is φ = 4555482624.

The previous prime is 5404647659. The next prime is 5404647691. The reversal of 5404647661 is 1667464045.

It is not a de Polignac number, because 5404647661 - 2¹ = 5404647659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5404647691) 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 15 ways as a sum of consecutive naturals, for example, 268401 + ... + 287833.

It is an arithmetic number, because the mean of its divisors is an integer number (392489064).

Almost surely, 2^5404647661 is an apocalyptic number.

It is an amenable number.

5404647661 is a deficient number, since it is larger than the sum of its proper divisors (875177363).

5404647661 is a wasteful number, since it uses less digits than its factorization.

5404647661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20100.

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 5404647661 is about 73516.3088096784. The cubic root of 5404647661 is about 1754.9138261219.

The spelling of 5404647661 in words is "five billion, four hundred four million, six hundred forty-seven thousand, six hundred sixty-one".