65116512 has 36 divisors (see below), whose sum is σ = 185175900. Its totient is φ = 21705408.

The previous prime is 65116483. The next prime is 65116517. The reversal of 65116512 is 21561156.

It is a happy number.

65116512 is a `hidden beast` number, since 6 + 5 + 1 + 1 + 651 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×65116512² = 8480320270092288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65116517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112762 + ... + 113337.

It is an arithmetic number, because the mean of its divisors is an integer number (5143775).

Almost surely, 2^65116512 is an apocalyptic number.

It is an amenable number.

65116512 is an abundant number, since it is smaller than the sum of its proper divisors (120059388).

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

65116512 is a wasteful number, since it uses less digits than its factorization.

65116512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226115 (or 226104 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 65116512 is about 8069.4802806624. The cubic root of 65116512 is about 402.3126697936.

Adding to 65116512 its reverse (21561156), we get a palindrome (86677668).

The spelling of 65116512 in words is "sixty-five million, one hundred sixteen thousand, five hundred twelve".