65161265530 has 32 divisors (see below), whose sum is σ = 118544311296. Its totient is φ = 25786482624.

The previous prime is 65161265503. The next prime is 65161265531. The reversal of 65161265530 is 3556216156.

It is not an unprimeable number, because it can be changed into a prime (65161265531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769767 + ... + 850213.

It is an arithmetic number, because the mean of its divisors is an integer number (3704509728).

Almost surely, 2^65161265530 is an apocalyptic number.

65161265530 is a deficient number, since it is larger than the sum of its proper divisors (53383045766).

65161265530 is a wasteful number, since it uses less digits than its factorization.

65161265530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81318.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 65161265530 in words is "sixty-five billion, one hundred sixty-one million, two hundred sixty-five thousand, five hundred thirty".