7215872292865 has 16 divisors (see below), whose sum is σ = 8871882516288. Its totient is φ = 5631154675776.

The previous prime is 7215872292829. The next prime is 7215872292869. The reversal of 7215872292865 is 5682922785127.

It is a cyclic number.

It is not a de Polignac number, because 7215872292865 - 2¹⁹ = 7215871768577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7215872292797 and 7215872292806.

It is not an unprimeable number, because it can be changed into a prime (7215872292869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21542859 + ... + 21875248.

It is an arithmetic number, because the mean of its divisors is an integer number (554492657268).

Almost surely, 2^{7215872292865} is an apocalyptic number.

It is an amenable number.

7215872292865 is a deficient number, since it is larger than the sum of its proper divisors (1656010223423).

7215872292865 is a wasteful number, since it uses less digits than its factorization.

7215872292865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43418928.

The product of its digits is 67737600, while the sum is 64.

The spelling of 7215872292865 in words is "seven trillion, two hundred fifteen billion, eight hundred seventy-two million, two hundred ninety-two thousand, eight hundred sixty-five".