65705705220 has 24 divisors (see below), whose sum is σ = 183975974784. Its totient is φ = 17521521376.

The previous prime is 65705705213. The next prime is 65705705231. The reversal of 65705705220 is 2250750756.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547547484 + ... + 547547603.

It is an arithmetic number, because the mean of its divisors is an integer number (7665665616).

Almost surely, 2^65705705220 is an apocalyptic number.

65705705220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65705705220 is an abundant number, since it is smaller than the sum of its proper divisors (118270269564).

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

65705705220 is a wasteful number, since it uses less digits than its factorization.

65705705220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095095099 (or 1095095097 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 39.

The spelling of 65705705220 in words is "sixty-five billion, seven hundred five million, seven hundred five thousand, two hundred twenty".