65525767296 has 128 divisors (see below), whose sum is σ = 193459026240. Its totient is φ = 19481579520.

The previous prime is 65525767261. The next prime is 65525767319. The reversal of 65525767296 is 69276752556.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77526 + ... + 370218.

Almost surely, 2^65525767296 is an apocalyptic number.

65525767296 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65525767296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96729513120).

65525767296 is an abundant number, since it is smaller than the sum of its proper divisors (127933258944).

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

65525767296 is a wasteful number, since it uses less digits than its factorization.

65525767296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292774 (or 292762 counting only the distinct ones).

The product of its digits is 47628000, while the sum is 60.

The spelling of 65525767296 in words is "sixty-five billion, five hundred twenty-five million, seven hundred sixty-seven thousand, two hundred ninety-six".