65416136212 has 18 divisors (see below), whose sum is σ = 133168563402. Its totient is φ = 28035486864.

The previous prime is 65416136209. The next prime is 65416136267. The reversal of 65416136212 is 21263161456.

It can be written as a sum of positive squares in only one way, i.e., 49419957636 + 15996178576 = 222306^2 + 126476^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166877703 + ... + 166878094.

Almost surely, 2^65416136212 is an apocalyptic number.

It is an amenable number.

65416136212 is an abundant number, since it is smaller than the sum of its proper divisors (67752427190).

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

65416136212 is a wasteful number, since it uses less digits than its factorization.

65416136212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333755815 (or 333755806 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

Adding to 65416136212 its reverse (21263161456), we get a palindrome (86679297668).

The spelling of 65416136212 in words is "sixty-five billion, four hundred sixteen million, one hundred thirty-six thousand, two hundred twelve".