220639651894080 has 672 divisors, whose sum is σ = 795202783764480. Its totient is φ = 58226367006720.

The previous prime is 220639651894069. The next prime is 220639651894097. The reversal of 220639651894080 is 80498156936022.

220639651894080 is a `hidden beast` number, since 2 + 2 + 0 + 6 + 39 + 6 + 518 + 9 + 4 + 0 + 80 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 220639651893999 and 220639651894017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8245423741 + ... + 8245450499.

It is an arithmetic number, because the mean of its divisors is an integer number (1183337475840).

Almost surely, 2^{220639651894080} is an apocalyptic number.

220639651894080 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 220639651894080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397601391882240).

220639651894080 is an abundant number, since it is smaller than the sum of its proper divisors (574563131870400).

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

220639651894080 is a wasteful number, since it uses less digits than its factorization.

220639651894080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27889 (or 27867 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 220639651894080 in words is "two hundred twenty trillion, six hundred thirty-nine billion, six hundred fifty-one million, eight hundred ninety-four thousand, eighty".