220008604509 has 6 divisors (see below), whose sum is σ = 317790206526. Its totient is φ = 146672403000.

The previous prime is 220008604481. The next prime is 220008604547. The reversal of 220008604509 is 905406800022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 134232838884 + 85775765625 = 366378^2 + 292875^2 .

It is not a de Polignac number, because 220008604509 - 2⁷ = 220008604381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220008606509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12222700242 + ... + 12222700259.

It is an arithmetic number, because the mean of its divisors is an integer number (52965034421).

Almost surely, 2^220008604509 is an apocalyptic number.

It is an amenable number.

220008604509 is a deficient number, since it is larger than the sum of its proper divisors (97781602017).

220008604509 is a wasteful number, since it uses less digits than its factorization.

220008604509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24445400507 (or 24445400504 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 220008604509 in words is "two hundred twenty billion, eight million, six hundred four thousand, five hundred nine".