5405123647 has 16 divisors (see below), whose sum is σ = 6747996672. Its totient is φ = 4206071520.

The previous prime is 5405123641. The next prime is 5405123681. The reversal of 5405123647 is 7463215045.

5405123647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5405123647 - 2¹⁵ = 5405090879 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 (5405123641) 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, 9973 + ... + 104449.

It is an arithmetic number, because the mean of its divisors is an integer number (421749792).

Almost surely, 2^5405123647 is an apocalyptic number.

5405123647 is a deficient number, since it is larger than the sum of its proper divisors (1342873025).

5405123647 is a wasteful number, since it uses less digits than its factorization.

5405123647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95238.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 5405123647 is about 73519.5460200891. The cubic root of 5405123647 is about 1754.9653428870.

The spelling of 5405123647 in words is "five billion, four hundred five million, one hundred twenty-three thousand, six hundred forty-seven".