65845054856 has 64 divisors (see below), whose sum is σ = 147481171200. Its totient is φ = 26946551808.

The previous prime is 65845054843. The next prime is 65845054859.

65845054856 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (65845054859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720680 + ... + 806888.

It is an arithmetic number, because the mean of its divisors is an integer number (2304393300).

Almost surely, 2^65845054856 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 65845054856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73740585600).

65845054856 is an abundant number, since it is smaller than the sum of its proper divisors (81636116344).

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

65845054856 is a wasteful number, since it uses less digits than its factorization.

65845054856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86838 (or 86834 counting only the distinct ones).

The product of its (nonzero) digits is 23040000, while the sum is 56.

The spelling of 65845054856 in words is "sixty-five billion, eight hundred forty-five million, fifty-four thousand, eight hundred fifty-six".