209922607485 has 12 divisors (see below), whose sum is σ = 363865853052. Its totient is φ = 111958723968.

The previous prime is 209922607483. The next prime is 209922607507. The reversal of 209922607485 is 584706229902.

209922607485 is a `hidden beast` number, since 2 + 0 + 9 + 9 + 22 + 607 + 4 + 8 + 5 = 666.

209922607485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 83023507044 + 126899100441 = 288138^2 + 356229^2 .

It is not a de Polignac number, because 209922607485 - 2¹ = 209922607483 is a prime.

It is a super-2 number, since 2×209922607485² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209922607483) 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 11 ways as a sum of consecutive naturals, for example, 2332473372 + ... + 2332473461.

It is an arithmetic number, because the mean of its divisors is an integer number (30322154421).

Almost surely, 2^209922607485 is an apocalyptic number.

It is an amenable number.

209922607485 is a deficient number, since it is larger than the sum of its proper divisors (153943245567).

209922607485 is a wasteful number, since it uses less digits than its factorization.

209922607485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664946844 (or 4664946841 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 209922607485 in words is "two hundred nine billion, nine hundred twenty-two million, six hundred seven thousand, four hundred eighty-five".