2117161550 has 24 divisors (see below), whose sum is σ = 4500481296. Its totient is φ = 725883840.

The previous prime is 2117161547. The next prime is 2117161591. The reversal of 2117161550 is 551617112.

It is a congruent number.

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, 3024167 + ... + 3024866.

It is an arithmetic number, because the mean of its divisors is an integer number (187520054).

Almost surely, 2^2117161550 is an apocalyptic number.

2117161550 is an abundant number, since it is smaller than the sum of its proper divisors (2383319746).

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

2117161550 is a wasteful number, since it uses less digits than its factorization.

2117161550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049052 (or 6049047 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 29.

The square root of 2117161550 is about 46012.6238112977. The cubic root of 2117161550 is about 1284.0580741745.

Adding to 2117161550 its reverse (551617112), we get a palindrome (2668778662).

The spelling of 2117161550 in words is "two billion, one hundred seventeen million, one hundred sixty-one thousand, five hundred fifty".