65729493288 has 96 divisors (see below), whose sum is σ = 186363777600. Its totient is φ = 20888803584.

The previous prime is 65729493287. The next prime is 65729493289. The reversal of 65729493288 is 88239492756.

65729493288 is a `hidden beast` number, since 65 + 7 + 2 + 9 + 493 + 2 + 88 = 666.

65729493288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65729493287) and next prime (65729493289).

It is not an unprimeable number, because it can be changed into a prime (65729493287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443748 + ... + 573036.

It is an arithmetic number, because the mean of its divisors is an integer number (1941289350).

Almost surely, 2^65729493288 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 65729493288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93181888800).

65729493288 is an abundant number, since it is smaller than the sum of its proper divisors (120634284312).

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

65729493288 is a wasteful number, since it uses less digits than its factorization.

65729493288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129631 (or 129624 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 65729493288 in words is "sixty-five billion, seven hundred twenty-nine million, four hundred ninety-three thousand, two hundred eighty-eight".