5405128861 has 16 divisors (see below), whose sum is σ = 5957385408. Its totient is φ = 4863110400.

The previous prime is 5405128829. The next prime is 5405128867. The reversal of 5405128861 is 1688215045.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5405128861 - 2⁵ = 5405128829 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 (5405128867) 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, 1906501 + ... + 1909333.

It is an arithmetic number, because the mean of its divisors is an integer number (372336588).

Almost surely, 2^5405128861 is an apocalyptic number.

It is an amenable number.

5405128861 is a deficient number, since it is larger than the sum of its proper divisors (552256547).

5405128861 is a wasteful number, since it uses less digits than its factorization.

5405128861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572.

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 5405128861 is about 73519.5814800384. The cubic root of 5405128861 is about 1754.9659071902.

The spelling of 5405128861 in words is "five billion, four hundred five million, one hundred twenty-eight thousand, eight hundred sixty-one".