220064620440 has 64 divisors (see below), whose sum is σ = 754507272960. Its totient is φ = 50300484480.

The previous prime is 220064620429. The next prime is 220064620459. The reversal of 220064620440 is 44026460022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 220064620398 and 220064620407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130990006 + ... + 130991685.

It is an arithmetic number, because the mean of its divisors is an integer number (11789176140).

Almost surely, 2^220064620440 is an apocalyptic number.

220064620440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220064620440 is an abundant number, since it is smaller than the sum of its proper divisors (534442652520).

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

220064620440 is a wasteful number, since it uses less digits than its factorization.

220064620440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261981712 (or 261981708 counting only the distinct ones).

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

The spelling of 220064620440 in words is "two hundred twenty billion, sixty-four million, six hundred twenty thousand, four hundred forty".