220773512064 has 64 divisors (see below), whose sum is σ = 670205312640. Its totient is φ = 63078145536.

The previous prime is 220773512041. The next prime is 220773512093. The reversal of 220773512064 is 460215377022.

It is a tau number, because it is divible by the number of its divisors (64).

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, 41063814 + ... + 41069189.

It is an arithmetic number, because the mean of its divisors is an integer number (10471958010).

Almost surely, 2^220773512064 is an apocalyptic number.

220773512064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220773512064 is an abundant number, since it is smaller than the sum of its proper divisors (449431800576).

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

220773512064 is an equidigital number, since it uses as much as digits as its factorization.

220773512064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82133027 (or 82133015 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

Adding to 220773512064 its reverse (460215377022), we get a palindrome (680988889086).

The spelling of 220773512064 in words is "two hundred twenty billion, seven hundred seventy-three million, five hundred twelve thousand, sixty-four".