5605161660 has 384 divisors, whose sum is σ = 20795443200. Its totient is φ = 1226741760.

The previous prime is 5605161659. The next prime is 5605161689. The reversal of 5605161660 is 661615065.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9143514 + ... + 9144126.

It is an arithmetic number, because the mean of its divisors is an integer number (54154800).

Almost surely, 2^5605161660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5605161660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10397721600).

5605161660 is an abundant number, since it is smaller than the sum of its proper divisors (15190281540).

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

5605161660 is a wasteful number, since it uses less digits than its factorization.

5605161660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 5605161660 is about 74867.6275836225. The cubic root of 5605161660 is about 1776.3534381499.

It can be divided in two parts, 56051 and 61660, that added together give a palindrome (117711).

The spelling of 5605161660 in words is "five billion, six hundred five million, one hundred sixty-one thousand, six hundred sixty".