7215050736721 has 32 divisors (see below), whose sum is σ = 7647015833600. Its totient is φ = 6788510285760.

The previous prime is 7215050736703. The next prime is 7215050736769. The reversal of 7215050736721 is 1276370505127.

It is not a de Polignac number, because 7215050736721 - 2³⁵ = 7180690998353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7215050736821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2653566400 + ... + 2653569118.

It is an arithmetic number, because the mean of its divisors is an integer number (238969244800).

Almost surely, 2^{7215050736721} is an apocalyptic number.

It is an amenable number.

7215050736721 is a deficient number, since it is larger than the sum of its proper divisors (431965096879).

7215050736721 is a wasteful number, since it uses less digits than its factorization.

7215050736721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469.

The product of its (nonzero) digits is 617400, while the sum is 46.

The spelling of 7215050736721 in words is "seven trillion, two hundred fifteen billion, fifty million, seven hundred thirty-six thousand, seven hundred twenty-one".