7150721443 has 4 divisors (see below), whose sum is σ = 7159066200. Its totient is φ = 7142376688.

The previous prime is 7150721393. The next prime is 7150721449. The reversal of 7150721443 is 3441270517.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7150721443 is a prime.

It is a super-2 number, since 2×7150721443² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7150721399 and 7150721408.

It is not an unprimeable number, because it can be changed into a prime (7150721449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4171093 + ... + 4172806.

It is an arithmetic number, because the mean of its divisors is an integer number (1789766550).

Almost surely, 2^7150721443 is an apocalyptic number.

7150721443 is a deficient number, since it is larger than the sum of its proper divisors (8344757).

7150721443 is an equidigital number, since it uses as much as digits as its factorization.

7150721443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8344756.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 7150721443 is about 84561.9385007227. The cubic root of 7150721443 is about 1926.5633170571.

The spelling of 7150721443 in words is "seven billion, one hundred fifty million, seven hundred twenty-one thousand, four hundred forty-three".