7362721321 has 8 divisors (see below), whose sum is σ = 7475574560. Its totient is φ = 7249955328.

The previous prime is 7362721319. The next prime is 7362721343. The reversal of 7362721321 is 1231272637.

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 7362721321 - 2¹ = 7362721319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7362721921) 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, 159730 + ... + 200596.

It is an arithmetic number, because the mean of its divisors is an integer number (934446820).

Almost surely, 2^7362721321 is an apocalyptic number.

It is an amenable number.

7362721321 is a deficient number, since it is larger than the sum of its proper divisors (112853239).

7362721321 is a wasteful number, since it uses less digits than its factorization.

7362721321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43623.

The product of its digits is 21168, while the sum is 34.

The square root of 7362721321 is about 85806.3011730491. The cubic root of 7362721321 is about 1945.4173626062.

Adding to 7362721321 its reverse (1231272637), we get a palindrome (8593993958).

The spelling of 7362721321 in words is "seven billion, three hundred sixty-two million, seven hundred twenty-one thousand, three hundred twenty-one".