7215072292865 has 16 divisors (see below), whose sum is σ = 8690584640400. Its totient is φ = 5750394116352.

The previous prime is 7215072292763. The next prime is 7215072292873. The reversal of 7215072292865 is 5682922705127.

It can be written as a sum of positive squares in 8 ways, for example, as 147535114609 + 7067537178256 = 384103^2 + 2658484^2 .

It is a cyclic number.

It is not a de Polignac number, because 7215072292865 - 2⁸ = 7215072292609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7215072292865.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 45420719 + ... + 45579291.

It is an arithmetic number, because the mean of its divisors is an integer number (543161540025).

Almost surely, 2^{7215072292865} is an apocalyptic number.

It is an amenable number.

7215072292865 is a deficient number, since it is larger than the sum of its proper divisors (1475512347535).

7215072292865 is a wasteful number, since it uses less digits than its factorization.

7215072292865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192676.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 7215072292865 in words is "seven trillion, two hundred fifteen billion, seventy-two million, two hundred ninety-two thousand, eight hundred sixty-five".