5721143749 has 4 divisors (see below), whose sum is σ = 5752752460. Its totient is φ = 5689535040.

The previous prime is 5721143741. The next prime is 5721143819. The reversal of 5721143749 is 9473411275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190246849 + 5530896900 = 13793^2 + 74370^2 .

It is a cyclic number.

It is not a de Polignac number, because 5721143749 - 2³ = 5721143741 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 (5721143741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15804084 + ... + 15804445.

It is an arithmetic number, because the mean of its divisors is an integer number (1438188115).

Almost surely, 2^5721143749 is an apocalyptic number.

It is an amenable number.

5721143749 is a deficient number, since it is larger than the sum of its proper divisors (31608711).

5721143749 is a wasteful number, since it uses less digits than its factorization.

5721143749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31608710.

The product of its digits is 211680, while the sum is 43.

The square root of 5721143749 is about 75638.2426355875. The cubic root of 5721143749 is about 1788.5220000990.

The spelling of 5721143749 in words is "five billion, seven hundred twenty-one million, one hundred forty-three thousand, seven hundred forty-nine".