7345272321 has 16 divisors (see below), whose sum is σ = 10886256000. Its totient is φ = 4894881264.

The previous prime is 7345272313. The next prime is 7345272353. The reversal of 7345272321 is 1232725437.

It is not a de Polignac number, because 7345272321 - 2³ = 7345272313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7345272371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15460 + ... + 122186.

It is an arithmetic number, because the mean of its divisors is an integer number (680391000).

Almost surely, 2^7345272321 is an apocalyptic number.

It is an amenable number.

7345272321 is a deficient number, since it is larger than the sum of its proper divisors (3540983679).

7345272321 is a wasteful number, since it uses less digits than its factorization.

7345272321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109285 (or 109279 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 7345272321 is about 85704.5641783447. The cubic root of 7345272321 is about 1943.8793244517.

Adding to 7345272321 its reverse (1232725437), we get a palindrome (8577997758).

The spelling of 7345272321 in words is "seven billion, three hundred forty-five million, two hundred seventy-two thousand, three hundred twenty-one".