5511661110 has 24 divisors (see below), whose sum is σ = 14330319120. Its totient is φ = 1469776272.

The previous prime is 5511661093. The next prime is 5511661123. The reversal of 5511661110 is 111661155.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30620250 + ... + 30620429.

It is an arithmetic number, because the mean of its divisors is an integer number (597096630).

Almost surely, 2^5511661110 is an apocalyptic number.

5511661110 is an abundant number, since it is smaller than the sum of its proper divisors (8818658010).

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

5511661110 is a wasteful number, since it uses less digits than its factorization.

5511661110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61240692 (or 61240689 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The square root of 5511661110 is about 74240.5624305204. The cubic root of 5511661110 is about 1766.4207955367.

It can be divided in two parts, 551 and 1661110, that added together give a palindrome (1661661).

The spelling of 5511661110 in words is "five billion, five hundred eleven million, six hundred sixty-one thousand, one hundred ten".