209119225797 has 20 divisors (see below), whose sum is σ = 312407336736. Its totient is φ = 139404178440.

The previous prime is 209119225771. The next prime is 209119225801. The reversal of 209119225797 is 797522911902.

209119225797 is a `hidden beast` number, since 209 + 11 + 92 + 257 + 97 = 666.

It is not a de Polignac number, because 209119225797 - 2⁸ = 209119225541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209119225747) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1404208 + ... + 1545974.

Almost surely, 2^209119225797 is an apocalyptic number.

209119225797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

209119225797 is a deficient number, since it is larger than the sum of its proper divisors (103288110939).

209119225797 is a wasteful number, since it uses less digits than its factorization.

209119225797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159990 (or 159981 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The spelling of 209119225797 in words is "two hundred nine billion, one hundred nineteen million, two hundred twenty-five thousand, seven hundred ninety-seven".