8161112550 has 48 divisors (see below), whose sum is σ = 20541667392. Its totient is φ = 2143812000.

The previous prime is 8161112521. The next prime is 8161112551. The reversal of 8161112550 is 552111618.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161112551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395976 + ... + 416075.

It is an arithmetic number, because the mean of its divisors is an integer number (427951404).

Almost surely, 2^8161112550 is an apocalyptic number.

8161112550 is an abundant number, since it is smaller than the sum of its proper divisors (12380554842).

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

8161112550 is a wasteful number, since it uses less digits than its factorization.

8161112550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812133 (or 812128 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 30.

The square root of 8161112550 is about 90338.8761829590. The cubic root of 8161112550 is about 2013.3369115387.

The spelling of 8161112550 in words is "eight billion, one hundred sixty-one million, one hundred twelve thousand, five hundred fifty".