2117187144 has 48 divisors (see below), whose sum is σ = 5736793920. Its totient is φ = 705391200.

The previous prime is 2117187139. The next prime is 2117187161. The reversal of 2117187144 is 4417817112.

2117187144 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2117187099 and 2117187108.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177909 + ... + 189435.

It is an arithmetic number, because the mean of its divisors is an integer number (119516540).

Almost surely, 2^2117187144 is an apocalyptic number.

2117187144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2117187144 is an abundant number, since it is smaller than the sum of its proper divisors (3619606776).

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

2117187144 is a wasteful number, since it uses less digits than its factorization.

2117187144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14090 (or 14083 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 2117187144 is about 46012.9019297849. The cubic root of 2117187144 is about 1284.0632484056.

The spelling of 2117187144 in words is "two billion, one hundred seventeen million, one hundred eighty-seven thousand, one hundred forty-four".