5436438723 has 24 divisors (see below), whose sum is σ = 8368409088. Its totient is φ = 3392948592.

The previous prime is 5436438719. The next prime is 5436438739. The reversal of 5436438723 is 3278346345.

5436438723 is a `hidden beast` number, since 543 + 6 + 4 + 3 + 87 + 23 = 666.

5436438723 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 5436438723 - 2² = 5436438719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5436438743) 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 23 ways as a sum of consecutive naturals, for example, 269665 + ... + 289122.

It is an arithmetic number, because the mean of its divisors is an integer number (348683712).

Almost surely, 2^5436438723 is an apocalyptic number.

5436438723 is a deficient number, since it is larger than the sum of its proper divisors (2931970365).

5436438723 is a wasteful number, since it uses less digits than its factorization.

5436438723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558863 (or 558860 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 5436438723 is about 73732.2095355890. The cubic root of 5436438723 is about 1758.3480025271.

The spelling of 5436438723 in words is "five billion, four hundred thirty-six million, four hundred thirty-eight thousand, seven hundred twenty-three".