65126986816 has 56 divisors (see below), whose sum is σ = 132021218304. Its totient is φ = 31865034240.

The previous prime is 65126986789. The next prime is 65126986823. The reversal of 65126986816 is 61868962156.

It is an unprimeable number.

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, 1274071 + ... + 1324201.

Almost surely, 2^65126986816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65126986816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66010609152).

65126986816 is an abundant number, since it is smaller than the sum of its proper divisors (66894231488).

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

65126986816 is a wasteful number, since it uses less digits than its factorization.

65126986816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50579 (or 50569 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 58.

The spelling of 65126986816 in words is "sixty-five billion, one hundred twenty-six million, nine hundred eighty-six thousand, eight hundred sixteen".