65871420219912 has 32 divisors (see below), whose sum is σ = 164736110508480. Its totient is φ = 21949465412160.

The previous prime is 65871420219907. The next prime is 65871420219929. The reversal of 65871420219912 is 21991202417856.

It is a happy number.

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, 479596228 + ... + 479733555.

It is an arithmetic number, because the mean of its divisors is an integer number (5148003453390).

Almost surely, 2^{65871420219912} is an apocalyptic number.

It is an amenable number.

65871420219912 is an abundant number, since it is smaller than the sum of its proper divisors (98864690288568).

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

65871420219912 is a wasteful number, since it uses less digits than its factorization.

65871420219912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959332653 (or 959332649 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 65871420219912 in words is "sixty-five trillion, eight hundred seventy-one billion, four hundred twenty million, two hundred nineteen thousand, nine hundred twelve".