65506015056 has 80 divisors (see below), whose sum is σ = 173714159360. Its totient is φ = 21263523840.

The previous prime is 65506015033. The next prime is 65506015111. The reversal of 65506015056 is 65051060556.

65506015056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 158496 + ... + 395136.

It is an arithmetic number, because the mean of its divisors is an integer number (2171426992).

Almost surely, 2^65506015056 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 65506015056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86857079680).

65506015056 is an abundant number, since it is smaller than the sum of its proper divisors (108208144304).

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

65506015056 is a wasteful number, since it uses less digits than its factorization.

65506015056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236804 (or 236798 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 65506015056 in words is "sixty-five billion, five hundred six million, fifteen thousand, fifty-six".