65819334912 has 144 divisors (see below), whose sum is σ = 185239380480. Its totient is φ = 20713881600.

The previous prime is 65819334887. The next prime is 65819334941. The reversal of 65819334912 is 21943391856.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942414 + ... + 1009842.

Almost surely, 2^65819334912 is an apocalyptic number.

65819334912 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65819334912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92619690240).

65819334912 is an abundant number, since it is smaller than the sum of its proper divisors (119420045568).

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

65819334912 is a wasteful number, since it uses less digits than its factorization.

65819334912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67520 (or 67506 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The spelling of 65819334912 in words is "sixty-five billion, eight hundred nineteen million, three hundred thirty-four thousand, nine hundred twelve".