65243434256 has 360 divisors, whose sum is σ = 175142665152. Its totient is φ = 23030092800.

The previous prime is 65243434213. The next prime is 65243434261.

65243434256 is nontrivially palindromic in base 10.

65243434256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 139707335 + ... + 139707801.

Almost surely, 2^65243434256 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 65243434256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87571332576).

65243434256 is an abundant number, since it is smaller than the sum of its proper divisors (109899230896).

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

65243434256 is a wasteful number, since it uses less digits than its factorization.

65243434256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 561 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 44.

The spelling of 65243434256 in words is "sixty-five billion, two hundred forty-three million, four hundred thirty-four thousand, two hundred fifty-six".