220051995409 has 9 divisors (see below), whose sum is σ = 223228758441. Its totient is φ = 216919834740.

The previous prime is 220051995377. The next prime is 220051995451. The reversal of 220051995409 is 904599150022.

The square root of 220051995409 is 469097.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 220051995409 - 2⁵ = 220051995377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220051995109) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33302584 + ... + 33309190.

Almost surely, 2^220051995409 is an apocalyptic number.

220051995409 is the 469097-th square number.

220051995409 is the 234549-th centered octagonal number.

It is an amenable number.

220051995409 is a deficient number, since it is larger than the sum of its proper divisors (3176763032).

220051995409 is an frugal number, since it uses more digits than its factorization.

220051995409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13356 (or 6678 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 46.

The spelling of 220051995409 in words is "two hundred twenty billion, fifty-one million, nine hundred ninety-five thousand, four hundred nine".