64843434846 has 32 divisors (see below), whose sum is σ = 144731335680. Its totient is φ = 21519256248.

The previous prime is 64843434841. The next prime is 64843434893.

64843434846 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64843434792 and 64843434801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64843434841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2632686 + ... + 2657201.

It is an arithmetic number, because the mean of its divisors is an integer number (4522854240).

Almost surely, 2^64843434846 is an apocalyptic number.

64843434846 is an abundant number, since it is smaller than the sum of its proper divisors (79887900834).

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

64843434846 is a wasteful number, since it uses less digits than its factorization.

64843434846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290125 (or 5290119 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 54.

The spelling of 64843434846 in words is "sixty-four billion, eight hundred forty-three million, four hundred thirty-four thousand, eight hundred forty-six".