220642505420 has 48 divisors (see below), whose sum is σ = 472589238240. Its totient is φ = 86500517376.

The previous prime is 220642505387. The next prime is 220642505423. The reversal of 220642505420 is 24505246022.

It is not an unprimeable number, because it can be changed into a prime (220642505423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900971 + ... + 1119389.

It is an arithmetic number, because the mean of its divisors is an integer number (9845609130).

Almost surely, 2^220642505420 is an apocalyptic number.

220642505420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220642505420 is an abundant number, since it is smaller than the sum of its proper divisors (251946732820).

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

220642505420 is a wasteful number, since it uses less digits than its factorization.

220642505420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219434 (or 219432 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 220642505420 in words is "two hundred twenty billion, six hundred forty-two million, five hundred five thousand, four hundred twenty".