5143720385 has 16 divisors (see below), whose sum is σ = 6277379472. Its totient is φ = 4045113600.

The previous prime is 5143720381. The next prime is 5143720397. The reversal of 5143720385 is 5830273415.

It can be written as a sum of positive squares in 8 ways, for example, as 394856641 + 4748863744 = 19871^2 + 68912^2 .

It is not a de Polignac number, because 5143720385 - 2² = 5143720381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5143720381) 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, 649067 + ... + 656943.

It is an arithmetic number, because the mean of its divisors is an integer number (392336217).

Almost surely, 2^5143720385 is an apocalyptic number.

It is an amenable number.

5143720385 is a deficient number, since it is larger than the sum of its proper divisors (1133659087).

5143720385 is a wasteful number, since it uses less digits than its factorization.

5143720385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10084.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 5143720385 is about 71719.7349758070. The cubic root of 5143720385 is about 1726.2053198941.

The spelling of 5143720385 in words is "five billion, one hundred forty-three million, seven hundred twenty thousand, three hundred eighty-five".