2165112161748 has 24 divisors (see below), whose sum is σ = 5613253752960. Its totient is φ = 721704053880.

The previous prime is 2165112161743. The next prime is 2165112161753. The reversal of 2165112161748 is 8471612115612.

It is a happy number.

2165112161748 is a `hidden beast` number, since 2 + 1 + 6 + 5 + 1 + 1 + 21 + 617 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (2165112161743) and next prime (2165112161753).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165112161743) 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 7 ways as a sum of consecutive naturals, for example, 10023667308 + ... + 10023667523.

It is an arithmetic number, because the mean of its divisors is an integer number (233885573040).

Almost surely, 2^{2165112161748} is an apocalyptic number.

It is an amenable number.

2165112161748 is an abundant number, since it is smaller than the sum of its proper divisors (3448141591212).

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

2165112161748 is a wasteful number, since it uses less digits than its factorization.

2165112161748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20047334844 (or 20047334836 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The spelling of 2165112161748 in words is "two trillion, one hundred sixty-five billion, one hundred twelve million, one hundred sixty-one thousand, seven hundred forty-eight".