65161265532 has 24 divisors (see below), whose sum is σ = 165865039872. Its totient is φ = 19745838000.

The previous prime is 65161265531. The next prime is 65161265549. The reversal of 65161265532 is 23556216156.

It is a super-2 number, since 2×65161265532² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 246822844 + ... + 246823107.

It is an arithmetic number, because the mean of its divisors is an integer number (6911043328).

Almost surely, 2^65161265532 is an apocalyptic number.

It is an amenable number.

65161265532 is an abundant number, since it is smaller than the sum of its proper divisors (100703774340).

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

65161265532 is a wasteful number, since it uses less digits than its factorization.

65161265532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493645969 (or 493645967 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The spelling of 65161265532 in words is "sixty-five billion, one hundred sixty-one million, two hundred sixty-five thousand, five hundred thirty-two".