82079591515 has 4 divisors (see below), whose sum is σ = 98495509824. Its totient is φ = 65663673208.

The previous prime is 82079591501. The next prime is 82079591521. The reversal of 82079591515 is 51519597028.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82079591515 - 2⁵ = 82079591483 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, 8207959147 + ... + 8207959156.

It is an arithmetic number, because the mean of its divisors is an integer number (24623877456).

Almost surely, 2^82079591515 is an apocalyptic number.

82079591515 is a deficient number, since it is larger than the sum of its proper divisors (16415918309).

82079591515 is a wasteful number, since it uses less digits than its factorization.

82079591515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16415918308.

The product of its (nonzero) digits is 1134000, while the sum is 52.

The spelling of 82079591515 in words is "eighty-two billion, seventy-nine million, five hundred ninety-one thousand, five hundred fifteen".