220860864000 has 1920 divisors, whose sum is σ = 1014213657600. Its totient is φ = 46282752000.

The previous prime is 220860863987. The next prime is 220860864089. The reversal of 220860864000 is 468068022.

220860864000 is a `hidden beast` number, since 2 + 2 + 0 + 8 + 6 + 0 + 8 + 640 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7124543985 + ... + 7124544015.

It is an arithmetic number, because the mean of its divisors is an integer number (528236280).

Almost surely, 2^220860864000 is an apocalyptic number.

220860864000 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 220860864000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507106828800).

220860864000 is an abundant number, since it is smaller than the sum of its proper divisors (793352793600).

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

220860864000 is an equidigital number, since it uses as much as digits as its factorization.

220860864000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 220860864000 in words is "two hundred twenty billion, eight hundred sixty million, eight hundred sixty-four thousand".