7373721601 has 4 divisors (see below), whose sum is σ = 7573011412. Its totient is φ = 7174431792.

The previous prime is 7373721599. The next prime is 7373721611. The reversal of 7373721601 is 1061273737.

7373721601 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1061273737 = 191 ⋅5556407.

It can be written as a sum of positive squares in 2 ways, for example, as 6955560000 + 418161601 = 83400^2 + 20449^2 .

It is a cyclic number.

It is not a de Polignac number, because 7373721601 - 2¹ = 7373721599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 199289773 = 7373721601 / (7 + 3 + 7 + 3 + 7 + 2 + 1 + 6 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7373721611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99644850 + ... + 99644923.

It is an arithmetic number, because the mean of its divisors is an integer number (1893252853).

Almost surely, 2^7373721601 is an apocalyptic number.

It is an amenable number.

7373721601 is a deficient number, since it is larger than the sum of its proper divisors (199289811).

7373721601 is a wasteful number, since it uses less digits than its factorization.

7373721601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199289810.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 7373721601 is about 85870.3767372660. The cubic root of 7373721601 is about 1946.3857313193.

The spelling of 7373721601 in words is "seven billion, three hundred seventy-three million, seven hundred twenty-one thousand, six hundred one".