65631114816 has 56 divisors (see below), whose sum is σ = 179250587904. Its totient is φ = 21171325440.

The previous prime is 65631114811. The next prime is 65631114823. The reversal of 65631114816 is 61841113656.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65631114811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5507415 + ... + 5519318.

Almost surely, 2^65631114816 is an apocalyptic number.

It is an amenable number.

65631114816 is an abundant number, since it is smaller than the sum of its proper divisors (113619473088).

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

65631114816 is a wasteful number, since it uses less digits than its factorization.

65631114816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11026779 (or 11026769 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The spelling of 65631114816 in words is "sixty-five billion, six hundred thirty-one million, one hundred fourteen thousand, eight hundred sixteen".