65161051660 has 12 divisors (see below), whose sum is σ = 136838208528. Its totient is φ = 26064420656.

The previous prime is 65161051649. The next prime is 65161051673. The reversal of 65161051660 is 6615016156.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1629026272 + ... + 1629026311.

It is an arithmetic number, because the mean of its divisors is an integer number (11403184044).

Almost surely, 2^65161051660 is an apocalyptic number.

It is an amenable number.

65161051660 is an abundant number, since it is smaller than the sum of its proper divisors (71677156868).

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

65161051660 is a wasteful number, since it uses less digits than its factorization.

65161051660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258052592 (or 3258052590 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 65161051660 in words is "sixty-five billion, one hundred sixty-one million, fifty-one thousand, six hundred sixty".