7361313721 has 8 divisors (see below), whose sum is σ = 7380088200. Its totient is φ = 7342558080.

The previous prime is 7361313719. The next prime is 7361313761. The reversal of 7361313721 is 1273131637.

It can be written as a sum of positive squares in 4 ways, for example, as 96138025 + 7265175696 = 9805^2 + 85236^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7361313721 - 2¹ = 7361313719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7361313761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074535 + ... + 1081363.

It is an arithmetic number, because the mean of its divisors is an integer number (922511025).

Almost surely, 2^7361313721 is an apocalyptic number.

It is an amenable number.

7361313721 is a deficient number, since it is larger than the sum of its proper divisors (18774479).

7361313721 is a wasteful number, since it uses less digits than its factorization.

7361313721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9419.

The product of its digits is 15876, while the sum is 34.

The square root of 7361313721 is about 85798.0985861575. The cubic root of 7361313721 is about 1945.2933801869.

The spelling of 7361313721 in words is "seven billion, three hundred sixty-one million, three hundred thirteen thousand, seven hundred twenty-one".