7483720738321 has 9 divisors (see below), whose sum is σ = 7898386162683. Its totient is φ = 7089791457960.

The previous prime is 7483720738301. The next prime is 7483720738343. The reversal of 7483720738321 is 1238370273847.

The square root of 7483720738321 is 2735639.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4216086062721 + 3267634675600 = 2053311^2 + 1807660^2 .

It is not a de Polignac number, because 7483720738321 - 2⁹ = 7483720737809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7483720738301) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 51905151 + ... + 52049131.

Almost surely, 2^{7483720738321} is an apocalyptic number.

7483720738321 is the 2735639-th square number.

7483720738321 is the 1367820-th centered octagonal number.

It is an amenable number.

7483720738321 is a deficient number, since it is larger than the sum of its proper divisors (414665424362).

7483720738321 is an frugal number, since it uses more digits than its factorization.

7483720738321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288000 (or 144000 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 55.

The spelling of 7483720738321 in words is "seven trillion, four hundred eighty-three billion, seven hundred twenty million, seven hundred thirty-eight thousand, three hundred twenty-one".