8118155291208 has 64 divisors (see below), whose sum is σ = 20996074584000. Its totient is φ = 2612634431232.

The previous prime is 8118155291173. The next prime is 8118155291243. The reversal of 8118155291208 is 8021925518118.

It is an interprime number because it is at equal distance from previous prime (8118155291173) and next prime (8118155291243).

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, 18089391 + ... + 18532737.

It is an arithmetic number, because the mean of its divisors is an integer number (328063665375).

Almost surely, 2^{8118155291208} is an apocalyptic number.

It is an amenable number.

8118155291208 is an abundant number, since it is smaller than the sum of its proper divisors (12877919292792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8118155291208 is a wasteful number, since it uses less digits than its factorization.

8118155291208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469694 (or 469690 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 51.

The spelling of 8118155291208 in words is "eight trillion, one hundred eighteen billion, one hundred fifty-five million, two hundred ninety-one thousand, two hundred eight".