65442402812 has 48 divisors (see below), whose sum is σ = 120527447040. Its totient is φ = 31049952000.

The previous prime is 65442402811. The next prime is 65442402821. The reversal of 65442402812 is 21820424456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65442402811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2922563 + ... + 2944869.

It is an arithmetic number, because the mean of its divisors is an integer number (2510988480).

Almost surely, 2^65442402812 is an apocalyptic number.

65442402812 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

65442402812 is a deficient number, since it is larger than the sum of its proper divisors (55085044228).

65442402812 is a wasteful number, since it uses less digits than its factorization.

65442402812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22802 (or 22800 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 38.

The spelling of 65442402812 in words is "sixty-five billion, four hundred forty-two million, four hundred two thousand, eight hundred twelve".