65611066650 has 24 divisors (see below), whose sum is σ = 162715445664. Its totient is φ = 17496284400.

The previous prime is 65611066613. The next prime is 65611066663. The reversal of 65611066650 is 5666011656.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218703406 + ... + 218703705.

It is an arithmetic number, because the mean of its divisors is an integer number (6779810236).

Almost surely, 2^65611066650 is an apocalyptic number.

65611066650 is an abundant number, since it is smaller than the sum of its proper divisors (97104379014).

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

65611066650 is a wasteful number, since it uses less digits than its factorization.

65611066650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437407126 (or 437407121 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 65611066650 in words is "sixty-five billion, six hundred eleven million, sixty-six thousand, six hundred fifty".