220775855784 has 32 divisors (see below), whose sum is σ = 602115971040. Its totient is φ = 66901774400.

The previous prime is 220775855779. The next prime is 220775855821. The reversal of 220775855784 is 487558577022.

220775855784 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418135827 + ... + 418136354.

It is an arithmetic number, because the mean of its divisors is an integer number (18816124095).

Almost surely, 2^220775855784 is an apocalyptic number.

220775855784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220775855784 is an abundant number, since it is smaller than the sum of its proper divisors (381340115256).

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

220775855784 is a wasteful number, since it uses less digits than its factorization.

220775855784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836272201 (or 836272197 counting only the distinct ones).

The product of its (nonzero) digits is 43904000, while the sum is 60.

The spelling of 220775855784 in words is "two hundred twenty billion, seven hundred seventy-five million, eight hundred fifty-five thousand, seven hundred eighty-four".