209009225098079 has 16 divisors (see below), whose sum is σ = 252936475658496. Its totient is φ = 168600651120000.

The previous prime is 209009225098073. The next prime is 209009225098099. The reversal of 209009225098079 is 970890522900902.

It is a de Polignac number, because none of the positive numbers 2^k-209009225098079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209009225098073) 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, 59927177 + ... + 63318914.

It is an arithmetic number, because the mean of its divisors is an integer number (15808529728656).

Almost surely, 2^{209009225098079} is an apocalyptic number.

209009225098079 is a deficient number, since it is larger than the sum of its proper divisors (43927250560417).

209009225098079 is a wasteful number, since it uses less digits than its factorization.

209009225098079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123260366.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 209009225098079 in words is "two hundred nine trillion, nine billion, two hundred twenty-five million, ninety-eight thousand, seventy-nine".