65989064872 has 64 divisors (see below), whose sum is σ = 130651914240. Its totient is φ = 31204958400.

The previous prime is 65989064861. The next prime is 65989064873. The reversal of 65989064872 is 27846098956.

It is not an unprimeable number, because it can be changed into a prime (65989064873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2094597 + ... + 2125867.

It is an arithmetic number, because the mean of its divisors is an integer number (2041436160).

Almost surely, 2^65989064872 is an apocalyptic number.

65989064872 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

65989064872 is a deficient number, since it is larger than the sum of its proper divisors (64662849368).

65989064872 is a wasteful number, since it uses less digits than its factorization.

65989064872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31502 (or 31498 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 65989064872 in words is "sixty-five billion, nine hundred eighty-nine million, sixty-four thousand, eight hundred seventy-two".