65729253632 has 72 divisors (see below), whose sum is σ = 150067503936. Its totient is φ = 28146640896.

The previous prime is 65729253539. The next prime is 65729253659. The reversal of 65729253632 is 23635292756.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2274023 + ... + 2302745.

It is an arithmetic number, because the mean of its divisors is an integer number (2084270888).

Almost surely, 2^65729253632 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 65729253632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75033751968).

65729253632 is an abundant number, since it is smaller than the sum of its proper divisors (84338250304).

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

65729253632 is a wasteful number, since it uses less digits than its factorization.

65729253632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30023 (or 30009 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 50.

The spelling of 65729253632 in words is "sixty-five billion, seven hundred twenty-nine million, two hundred fifty-three thousand, six hundred thirty-two".