65395979064 has 144 divisors (see below), whose sum is σ = 192058097400. Its totient is φ = 20093329152.

The previous prime is 65395979053. The next prime is 65395979087. The reversal of 65395979064 is 46097959356.

65395979064 is a `hidden beast` number, since 6 + 5 + 39 + 597 + 9 + 0 + 6 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 65395978992 and 65395979010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9572802 + ... + 9579630.

Almost surely, 2^65395979064 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 65395979064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96029048700).

65395979064 is an abundant number, since it is smaller than the sum of its proper divisors (126662118336).

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

65395979064 is a wasteful number, since it uses less digits than its factorization.

65395979064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7654 (or 7634 counting only the distinct ones).

The product of its (nonzero) digits is 55112400, while the sum is 63.

The spelling of 65395979064 in words is "sixty-five billion, three hundred ninety-five million, nine hundred seventy-nine thousand, sixty-four".