5143720409 has 2 divisors, whose sum is σ = 5143720410. Its totient is φ = 5143720408.

The previous prime is 5143720397. The next prime is 5143720423. The reversal of 5143720409 is 9040273415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2575258009 + 2568462400 = 50747^2 + 50680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5143720409 is a prime.

It is not a weakly prime, because it can be changed into another prime (5143726409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571860204 + 2571860205.

It is an arithmetic number, because the mean of its divisors is an integer number (2571860205).

Almost surely, 2^5143720409 is an apocalyptic number.

It is an amenable number.

5143720409 is a deficient number, since it is larger than the sum of its proper divisors (1).

5143720409 is an equidigital number, since it uses as much as digits as its factorization.

5143720409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 5143720409 is about 71719.7351431250. The cubic root of 5143720409 is about 1726.2053225788.

The spelling of 5143720409 in words is "five billion, one hundred forty-three million, seven hundred twenty thousand, four hundred nine".