8155116550 has 60 divisors (see below), whose sum is σ = 17695810476. Its totient is φ = 2795998800.

The previous prime is 8155116533. The next prime is 8155116589. The reversal of 8155116550 is 556115518.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 86085 + ... + 154015.

Almost surely, 2^8155116550 is an apocalyptic number.

8155116550 is an abundant number, since it is smaller than the sum of its proper divisors (9540693926).

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

8155116550 is an equidigital number, since it uses as much as digits as its factorization.

8155116550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67971 (or 67945 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 37.

The square root of 8155116550 is about 90305.6839296398. The cubic root of 8155116550 is about 2012.8437220095.

The spelling of 8155116550 in words is "eight billion, one hundred fifty-five million, one hundred sixteen thousand, five hundred fifty".