20855054445760 has 112 divisors (see below), whose sum is σ = 49839081842592. Its totient is φ = 8312177664000.

The previous prime is 20855054445739. The next prime is 20855054445821. The reversal of 20855054445760 is 6754445055802.

It is a happy number.

It is a super-2 number, since 2×20855054445760² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100479690 + ... + 100687030.

It is an arithmetic number, because the mean of its divisors is an integer number (444991802166).

Almost surely, 2^{20855054445760} is an apocalyptic number.

20855054445760 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 20855054445760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24919540921296).

20855054445760 is an abundant number, since it is smaller than the sum of its proper divisors (28984027396832).

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

20855054445760 is a wasteful number, since it uses less digits than its factorization.

20855054445760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208482 (or 208472 counting only the distinct ones).

The product of its (nonzero) digits is 26880000, while the sum is 55.

The spelling of 20855054445760 in words is "twenty trillion, eight hundred fifty-five billion, fifty-four million, four hundred forty-five thousand, seven hundred sixty".