220020406464 has 56 divisors (see below), whose sum is σ = 597870785968. Its totient is φ = 71357967360.

The previous prime is 220020406423. The next prime is 220020406469. The reversal of 220020406464 is 464604020022.

220020406464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220020406469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15478567 + ... + 15492774.

Almost surely, 2^220020406464 is an apocalyptic number.

220020406464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220020406464 is an abundant number, since it is smaller than the sum of its proper divisors (377850379504).

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

220020406464 is a wasteful number, since it uses less digits than its factorization.

220020406464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30971393 (or 30971383 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 220020406464 its reverse (464604020022), we get a palindrome (684624426486).

The spelling of 220020406464 in words is "two hundred twenty billion, twenty million, four hundred six thousand, four hundred sixty-four".