71720240500000 has 336 divisors, whose sum is σ = 185947632339840. Its totient is φ = 27154569600000.

The previous prime is 71720240499967. The next prime is 71720240500009. The reversal of 71720240500000 is 504202717.

It is not an unprimeable number, because it can be changed into a prime (71720240500009) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 14126497462 + ... + 14126502538.

It is an arithmetic number, because the mean of its divisors is an integer number (553415572440).

Almost surely, 2^{71720240500000} 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 71720240500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92973816169920).

71720240500000 is an abundant number, since it is smaller than the sum of its proper divisors (114227391839840).

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

71720240500000 is an equidigital number, since it uses as much as digits as its factorization.

71720240500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623 (or 6590 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

Adding to 71720240500000 its reverse (504202717), we get a palindrome (71720744702717).

The spelling of 71720240500000 in words is "seventy-one trillion, seven hundred twenty billion, two hundred forty million, five hundred thousand".