20271219843616 has 192 divisors, whose sum is σ = 47217550786560. Its totient is φ = 8383164180480.

The previous prime is 20271219843601. The next prime is 20271219843619. The reversal of 20271219843616 is 61634891217202.

It is a super-2 number, since 2×20271219843616² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20271219843619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5619964885 + ... + 5619968491.

It is an arithmetic number, because the mean of its divisors is an integer number (245924743680).

Almost surely, 2^{20271219843616} 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 20271219843616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23608775393280).

20271219843616 is an abundant number, since it is smaller than the sum of its proper divisors (26946330942944).

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

20271219843616 is a wasteful number, since it uses less digits than its factorization.

20271219843616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767 (or 5759 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 20271219843616 in words is "twenty trillion, two hundred seventy-one billion, two hundred nineteen million, eight hundred forty-three thousand, six hundred sixteen".