19720616160 has 192 divisors, whose sum is σ = 71393011200. Its totient is φ = 4482250752.

The previous prime is 19720616143. The next prime is 19720616177. The reversal of 19720616160 is 6161602791.

It is an interprime number because it is at equal distance from previous prime (19720616143) and next prime (19720616177).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 585046 + ... + 617834.

It is an arithmetic number, because the mean of its divisors is an integer number (371838600).

Almost surely, 2^19720616160 is an apocalyptic number.

19720616160 is a gapful number since it is divisible by the number (10) 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 19720616160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35696505600).

19720616160 is an abundant number, since it is smaller than the sum of its proper divisors (51672395040).

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

19720616160 is a wasteful number, since it uses less digits than its factorization.

19720616160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32993 (or 32985 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The spelling of 19720616160 in words is "nineteen billion, seven hundred twenty million, six hundred sixteen thousand, one hundred sixty".