7321099873 has 4 divisors (see below), whose sum is σ = 7323273748. Its totient is φ = 7318926000.

The previous prime is 7321099871. The next prime is 7321099883. The reversal of 7321099873 is 3789901237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3789901237 = 113 ⋅33538949.

It can be written as a sum of positive squares in 2 ways, for example, as 6646814784 + 674285089 = 81528^2 + 25967^2 .

It is a cyclic number.

It is not a de Polignac number, because 7321099873 - 2¹ = 7321099871 is a prime.

It is a super-2 number, since 2×7321099873² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7321099871) 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, 1081878 + ... + 1088623.

It is an arithmetic number, because the mean of its divisors is an integer number (1830818437).

Almost surely, 2^7321099873 is an apocalyptic number.

It is an amenable number.

7321099873 is a deficient number, since it is larger than the sum of its proper divisors (2173875).

7321099873 is a wasteful number, since it uses less digits than its factorization.

7321099873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173874.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 7321099873 is about 85563.4260242073. The cubic root of 7321099873 is about 1941.7446198113.

The spelling of 7321099873 in words is "seven billion, three hundred twenty-one million, ninety-nine thousand, eight hundred seventy-three".