2161715124 has 12 divisors (see below), whose sum is σ = 5044001984. Its totient is φ = 720571704.

The previous prime is 2161715117. The next prime is 2161715197. The reversal of 2161715124 is 4215171612.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2161715091 and 2161715100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90071452 + ... + 90071475.

Almost surely, 2^2161715124 is an apocalyptic number.

It is an amenable number.

2161715124 is an abundant number, since it is smaller than the sum of its proper divisors (2882286860).

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

2161715124 is a wasteful number, since it uses less digits than its factorization.

2161715124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180142934 (or 180142932 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 2161715124 is about 46494.2482894390. The cubic root of 2161715124 is about 1293.0028644868.

Adding to 2161715124 its reverse (4215171612), we get a palindrome (6376886736).

The spelling of 2161715124 in words is "two billion, one hundred sixty-one million, seven hundred fifteen thousand, one hundred twenty-four".