661106165110 has 16 divisors (see below), whose sum is σ = 1190003270400. Its totient is φ = 264439760896.

The previous prime is 661106165089. The next prime is 661106165113. The reversal of 661106165110 is 11561601166.

It is a super-2 number, since 2×661106165110² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661106165113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906411 + ... + 1464169.

It is an arithmetic number, because the mean of its divisors is an integer number (74375204400).

Almost surely, 2^661106165110 is an apocalyptic number.

661106165110 is a deficient number, since it is larger than the sum of its proper divisors (528897105290).

661106165110 is a wasteful number, since it uses less digits than its factorization.

661106165110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676295.

The product of its (nonzero) digits is 6480, while the sum is 34.

Adding to 661106165110 its reverse (11561601166), we get a palindrome (672667766276).

The spelling of 661106165110 in words is "six hundred sixty-one billion, one hundred six million, one hundred sixty-five thousand, one hundred ten".