220505555072 has 64 divisors (see below), whose sum is σ = 482882320800. Its totient is φ = 99464601600.

The previous prime is 220505555069. The next prime is 220505555191. The reversal of 220505555072 is 270555505022.

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

It is a super-3 number, since 3×220505555072³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 413297 + ... + 782192.

Almost surely, 2^220505555072 is an apocalyptic number.

220505555072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220505555072 is an abundant number, since it is smaller than the sum of its proper divisors (262376765728).

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

220505555072 is a wasteful number, since it uses less digits than its factorization.

220505555072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195645 (or 1195633 counting only the distinct ones).

The product of its (nonzero) digits is 175000, while the sum is 38.

It can be divided in two parts, 220505 and 555072, that added together give a palindrome (775577).

The spelling of 220505555072 in words is "two hundred twenty billion, five hundred five million, five hundred fifty-five thousand, seventy-two".