220106777780 has 24 divisors (see below), whose sum is σ = 465285327360. Its totient is φ = 87459645600.

The previous prime is 220106777771. The next prime is 220106777819. The reversal of 220106777780 is 87777601022.

220106777780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 36438500 + ... + 36444539.

It is an arithmetic number, because the mean of its divisors is an integer number (19386888640).

Almost surely, 2^220106777780 is an apocalyptic number.

220106777780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220106777780 is an abundant number, since it is smaller than the sum of its proper divisors (245178549580).

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

220106777780 is a wasteful number, since it uses less digits than its factorization.

220106777780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72883199 (or 72883197 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 47.

The spelling of 220106777780 in words is "two hundred twenty billion, one hundred six million, seven hundred seventy-seven thousand, seven hundred eighty".