8118205079215 has 16 divisors (see below), whose sum is σ = 12145678248960. Its totient is φ = 5060699269920.

The previous prime is 8118205079213. The next prime is 8118205079251. The reversal of 8118205079215 is 5129705028118.

It is a happy number.

It is not a de Polignac number, because 8118205079215 - 2¹ = 8118205079213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8118205079213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10543123095 + ... + 10543123864.

It is an arithmetic number, because the mean of its divisors is an integer number (759104890560).

Almost surely, 2^{8118205079215} is an apocalyptic number.

8118205079215 is a deficient number, since it is larger than the sum of its proper divisors (4027473169745).

8118205079215 is a wasteful number, since it uses less digits than its factorization.

8118205079215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21086246982.

The product of its (nonzero) digits is 403200, while the sum is 49.

The spelling of 8118205079215 in words is "eight trillion, one hundred eighteen billion, two hundred five million, seventy-nine thousand, two hundred fifteen".