65120333540 has 48 divisors (see below), whose sum is σ = 137514948480. Its totient is φ = 25903342080.

The previous prime is 65120333513. The next prime is 65120333591. The reversal of 65120333540 is 4533302156.

It is a junction number, because it is equal to n+sod(n) for n = 65120333497 and 65120333506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2681171 + ... + 2705349.

It is an arithmetic number, because the mean of its divisors is an integer number (2864894760).

Almost surely, 2^65120333540 is an apocalyptic number.

It is an amenable number.

65120333540 is an abundant number, since it is smaller than the sum of its proper divisors (72394614940).

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

65120333540 is a wasteful number, since it uses less digits than its factorization.

65120333540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24932 (or 24930 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 65120333540 its reverse (4533302156), we get a palindrome (69653635696).

The spelling of 65120333540 in words is "sixty-five billion, one hundred twenty million, three hundred thirty-three thousand, five hundred forty".