65145512 has 16 divisors (see below), whose sum is σ = 122379360. Its totient is φ = 32511024.

The previous prime is 65145511. The next prime is 65145523. The reversal of 65145512 is 21554156.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65145511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3068 + ... + 11819.

It is an arithmetic number, because the mean of its divisors is an integer number (7648710).

Almost surely, 2^65145512 is an apocalyptic number.

It is an amenable number.

65145512 is a deficient number, since it is larger than the sum of its proper divisors (57233848).

65145512 is a wasteful number, since it uses less digits than its factorization.

65145512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15440 (or 15436 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The square root of 65145512 is about 8071.2769745561. The cubic root of 65145512 is about 402.3723849897.

Adding to 65145512 its reverse (21554156), we get a palindrome (86699668).

The spelling of 65145512 in words is "sixty-five million, one hundred forty-five thousand, five hundred twelve".