7150721573 has 12 divisors (see below), whose sum is σ = 7553625228. Its totient is φ = 6768316800.

The previous prime is 7150721537. The next prime is 7150721581. The reversal of 7150721573 is 3751270517.

It can be written as a sum of positive squares in 2 ways, for example, as 75724804 + 7074996769 = 8702^2 + 84113^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7150721573 is a prime.

It is a super-2 number, since 2×7150721573² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7150721533) 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 11 ways as a sum of consecutive naturals, for example, 425315 + ... + 441807.

It is an arithmetic number, because the mean of its divisors is an integer number (629468769).

Almost surely, 2^7150721573 is an apocalyptic number.

It is an amenable number.

7150721573 is a deficient number, since it is larger than the sum of its proper divisors (402903655).

7150721573 is a wasteful number, since it uses less digits than its factorization.

7150721573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17732 (or 17713 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 7150721573 is about 84561.9392693900. The cubic root of 7150721573 is about 1926.5633287321.

The spelling of 7150721573 in words is "seven billion, one hundred fifty million, seven hundred twenty-one thousand, five hundred seventy-three".