7932215007865 has 4 divisors (see below), whose sum is σ = 9518658009444. Its totient is φ = 6345772006288.

The previous prime is 7932215007839. The next prime is 7932215007907. The reversal of 7932215007865 is 5687005122397.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4694450222224 + 3237764785641 = 2166668^2 + 1799379^2 .

It is a cyclic number.

It is not a de Polignac number, because 7932215007865 - 2⁴¹ = 5733191752313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793221500782 + ... + 793221500791.

It is an arithmetic number, because the mean of its divisors is an integer number (2379664502361).

Almost surely, 2^{7932215007865} is an apocalyptic number.

It is an amenable number.

7932215007865 is a deficient number, since it is larger than the sum of its proper divisors (1586443001579).

7932215007865 is a wasteful number, since it uses less digits than its factorization.

7932215007865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586443001578.

The product of its (nonzero) digits is 6350400, while the sum is 55.

The spelling of 7932215007865 in words is "seven trillion, nine hundred thirty-two billion, two hundred fifteen million, seven thousand, eight hundred sixty-five".