220340480178 has 128 divisors (see below), whose sum is σ = 548145561600. Its totient is φ = 57496780800.

The previous prime is 220340480177. The next prime is 220340480209. The reversal of 220340480178 is 871084043022.

It is a super-2 number, since 2×220340480178² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (220340480177) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21183423 + ... + 21193821.

It is an arithmetic number, because the mean of its divisors is an integer number (4282387200).

Almost surely, 2^220340480178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220340480178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274072780800).

220340480178 is an abundant number, since it is smaller than the sum of its proper divisors (327805081422).

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

220340480178 is a wasteful number, since it uses less digits than its factorization.

220340480178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10832.

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 220340480178 in words is "two hundred twenty billion, three hundred forty million, four hundred eighty thousand, one hundred seventy-eight".