7239871745 has 16 divisors (see below), whose sum is σ = 8718233040. Its totient is φ = 5771673600.

The previous prime is 7239871673. The next prime is 7239871811. The reversal of 7239871745 is 5471789327.

It can be written as a sum of positive squares in 8 ways, for example, as 5125987216 + 2113884529 = 71596^2 + 45977^2 .

It is not a de Polignac number, because 7239871745 - 2²⁰ = 7238823169 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2964725 + ... + 2967165.

It is an arithmetic number, because the mean of its divisors is an integer number (544889565).

Almost surely, 2^7239871745 is an apocalyptic number.

It is an amenable number.

7239871745 is a deficient number, since it is larger than the sum of its proper divisors (1478361295).

7239871745 is a wasteful number, since it uses less digits than its factorization.

7239871745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276.

The product of its digits is 2963520, while the sum is 53.

The square root of 7239871745 is about 85087.4358821560. The cubic root of 7239871745 is about 1934.5366307404.

The spelling of 7239871745 in words is "seven billion, two hundred thirty-nine million, eight hundred seventy-one thousand, seven hundred forty-five".