65244665160 has 512 divisors, whose sum is σ = 239609664000. Its totient is φ = 15718219776.

The previous prime is 65244665141. The next prime is 65244665183. The reversal of 65244665160 is 6156644256.

65244665160 is a `hidden beast` number, since 6 + 5 + 24 + 466 + 5 + 160 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 150680304 + ... + 150680736.

It is an arithmetic number, because the mean of its divisors is an integer number (467987625).

Almost surely, 2^65244665160 is an apocalyptic number.

65244665160 is a gapful number since it is divisible by the number (60) 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 65244665160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119804832000).

65244665160 is an abundant number, since it is smaller than the sum of its proper divisors (174364998840).

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

65244665160 is a wasteful number, since it uses less digits than its factorization.

65244665160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 65244665160 in words is "sixty-five billion, two hundred forty-four million, six hundred sixty-five thousand, one hundred sixty".