220647632672880 has 640 divisors, whose sum is σ = 874587808512000. Its totient is φ = 50085109555200.

The previous prime is 220647632672861. The next prime is 220647632672891. The reversal of 220647632672880 is 88276236746022.

220647632672880 is a `hidden beast` number, since 2 + 2 + 0 + 6 + 476 + 3 + 2 + 67 + 28 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20638628335 + ... + 20638639025.

It is an arithmetic number, because the mean of its divisors is an integer number (1366543450800).

Almost surely, 2^{220647632672880} is an apocalyptic number.

220647632672880 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 220647632672880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437293904256000).

220647632672880 is an abundant number, since it is smaller than the sum of its proper divisors (653940175839120).

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

220647632672880 is a wasteful number, since it uses less digits than its factorization.

220647632672880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20030 (or 20018 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 63.

The spelling of 220647632672880 in words is "two hundred twenty trillion, six hundred forty-seven billion, six hundred thirty-two million, six hundred seventy-two thousand, eight hundred eighty".