72211609808 has 120 divisors (see below), whose sum is σ = 156868888320. Its totient is φ = 32154071040.

The previous prime is 72211609787. The next prime is 72211609871. The reversal of 72211609808 is 80890611227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31768160 + ... + 31770432.

It is an arithmetic number, because the mean of its divisors is an integer number (1307240736).

Almost surely, 2^72211609808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72211609808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78434444160).

72211609808 is an abundant number, since it is smaller than the sum of its proper divisors (84657278512).

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

72211609808 is a wasteful number, since it uses less digits than its factorization.

72211609808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 72211609808 in words is "seventy-two billion, two hundred eleven million, six hundred nine thousand, eight hundred eight".