220464646400 has 108 divisors (see below), whose sum is σ = 558375480432. Its totient is φ = 86134917120.

The previous prime is 220464646399. The next prime is 220464646429. The reversal of 220464646400 is 4646464022.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125354 + ... + 675753.

Almost surely, 2^220464646400 is an apocalyptic number.

220464646400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220464646400 is an abundant number, since it is smaller than the sum of its proper divisors (337910834032).

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

220464646400 is an equidigital number, since it uses as much as digits as its factorization.

220464646400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801176 (or 801157 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

It can be divided in two parts, 2 and 20464646400, that added together give a palindrome (20464646402).

The spelling of 220464646400 in words is "two hundred twenty billion, four hundred sixty-four million, six hundred forty-six thousand, four hundred".