65161065115552 has 192 divisors, whose sum is σ = 150601235710464. Its totient is φ = 27175734743040.

The previous prime is 65161065115529. The next prime is 65161065115589. The reversal of 65161065115552 is 25551156016156.

It is a super-2 number, since 2×65161065115552² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65161065115496 and 65161065115505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 913954018 + ... + 914025310.

It is an arithmetic number, because the mean of its divisors is an integer number (784381435992).

Almost surely, 2^{65161065115552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65161065115552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75300617855232).

65161065115552 is an abundant number, since it is smaller than the sum of its proper divisors (85440170594912).

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

65161065115552 is a wasteful number, since it uses less digits than its factorization.

65161065115552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71991 (or 71983 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 49.

The spelling of 65161065115552 in words is "sixty-five trillion, one hundred sixty-one billion, sixty-five million, one hundred fifteen thousand, five hundred fifty-two".