661005106110 has 96 divisors (see below), whose sum is σ = 1776711736800. Its totient is φ = 170393739264.

The previous prime is 661005106081. The next prime is 661005106127. The reversal of 661005106110 is 11601500166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 505035 + ... + 1255814.

It is an arithmetic number, because the mean of its divisors is an integer number (18507413925).

Almost surely, 2^661005106110 is an apocalyptic number.

661005106110 is an abundant number, since it is smaller than the sum of its proper divisors (1115706630690).

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

661005106110 is a wasteful number, since it uses less digits than its factorization.

661005106110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761002 (or 1760999 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

Adding to 661005106110 its reverse (11601500166), we get a palindrome (672606606276).

The spelling of 661005106110 in words is "six hundred sixty-one billion, five million, one hundred six thousand, one hundred ten".