66110511610 has 128 divisors (see below), whose sum is σ = 148988657664. Its totient is φ = 20774012160.

The previous prime is 66110511583. The next prime is 66110511611. The reversal of 66110511610 is 1611501166.

It is not an unprimeable number, because it can be changed into a prime (66110511611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1524447 + ... + 1567213.

It is an arithmetic number, because the mean of its divisors is an integer number (1163973888).

Almost surely, 2^66110511610 is an apocalyptic number.

66110511610 is an abundant number, since it is smaller than the sum of its proper divisors (82878146054).

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

66110511610 is a wasteful number, since it uses less digits than its factorization.

66110511610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42868.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 66110511610 in words is "sixty-six billion, one hundred ten million, five hundred eleven thousand, six hundred ten".