5243644623 has 32 divisors (see below), whose sum is σ = 8161689600. Its totient is φ = 2932390656.

The previous prime is 5243644621. The next prime is 5243644649. The reversal of 5243644623 is 3264463425.

It is not a de Polignac number, because 5243644623 - 2¹ = 5243644621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5243644621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 449458 + ... + 460976.

It is an arithmetic number, because the mean of its divisors is an integer number (255052800).

Almost surely, 2^5243644623 is an apocalyptic number.

5243644623 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

5243644623 is a deficient number, since it is larger than the sum of its proper divisors (2918044977).

5243644623 is a wasteful number, since it uses less digits than its factorization.

5243644623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11991.

The product of its digits is 414720, while the sum is 39.

The square root of 5243644623 is about 72413.0141825349. The cubic root of 5243644623 is about 1737.3117230766.

The spelling of 5243644623 in words is "five billion, two hundred forty-three million, six hundred forty-four thousand, six hundred twenty-three".