20708885705480 has 192 divisors, whose sum is σ = 57072423744000. Its totient is φ = 6724452059136.

The previous prime is 20708885705471. The next prime is 20708885705491. The reversal of 20708885705480 is 8450758880702.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125006384 + ... + 125171936.

It is an arithmetic number, because the mean of its divisors is an integer number (297252207000).

Almost surely, 2^{20708885705480} is an apocalyptic number.

20708885705480 is a gapful number since it is divisible by the number (20) 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 20708885705480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28536211872000).

20708885705480 is an abundant number, since it is smaller than the sum of its proper divisors (36363538038520).

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

20708885705480 is a wasteful number, since it uses less digits than its factorization.

20708885705480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168956 (or 168945 counting only the distinct ones).

The product of its (nonzero) digits is 40140800, while the sum is 62.

The spelling of 20708885705480 in words is "twenty trillion, seven hundred eight billion, eight hundred eighty-five million, seven hundred five thousand, four hundred eighty".