65805850856 has 8 divisors (see below), whose sum is σ = 123385970370. Its totient is φ = 32902925424.

The previous prime is 65805850853. The next prime is 65805850861.

65805850856 is nontrivially palindromic in base 10.

65805850856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 65246528356 + 559322500 = 255434^2 + 23650^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (65805850853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4112865671 + ... + 4112865686.

Almost surely, 2^65805850856 is an apocalyptic number.

It is an amenable number.

65805850856 is a deficient number, since it is larger than the sum of its proper divisors (57580119514).

65805850856 is a wasteful number, since it uses less digits than its factorization.

65805850856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8225731363 (or 8225731359 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 56.

The spelling of 65805850856 in words is "sixty-five billion, eight hundred five million, eight hundred fifty thousand, eight hundred fifty-six".