82891961360915 has 24 divisors (see below), whose sum is σ = 115768881177840. Its totient is φ = 56811480065088.

The previous prime is 82891961360903. The next prime is 82891961360917. The reversal of 82891961360915 is 51906316919828.

It is not a de Polignac number, because 82891961360915 - 2³⁰ = 82890887619091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82891961360917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84996332 + ... + 85966041.

It is an arithmetic number, because the mean of its divisors is an integer number (4823703382410).

Almost surely, 2^{82891961360915} is an apocalyptic number.

82891961360915 is a deficient number, since it is larger than the sum of its proper divisors (32876919816925).

82891961360915 is a wasteful number, since it uses less digits than its factorization.

82891961360915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170964371 (or 170964364 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 68.

The spelling of 82891961360915 in words is "eighty-two trillion, eight hundred ninety-one billion, nine hundred sixty-one million, three hundred sixty thousand, nine hundred fifteen".