65215218084 has 24 divisors (see below), whose sum is σ = 152174002848. Its totient is φ = 21737668800.

The previous prime is 65215218059. The next prime is 65215218091. The reversal of 65215218084 is 48081251256.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368559 + ... + 516009.

It is an arithmetic number, because the mean of its divisors is an integer number (6340583452).

Almost surely, 2^65215218084 is an apocalyptic number.

It is an amenable number.

65215218084 is an abundant number, since it is smaller than the sum of its proper divisors (86958784764).

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

65215218084 is a wasteful number, since it uses less digits than its factorization.

65215218084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184315 (or 184313 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 65215218084 in words is "sixty-five billion, two hundred fifteen million, two hundred eighteen thousand, eighty-four".