209011590897 has 8 divisors (see below), whose sum is σ = 278921749344. Its totient is φ = 139221246528.

The previous prime is 209011590881. The next prime is 209011590913. The reversal of 209011590897 is 798095110902.

209011590897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (209011590881) and next prime (209011590913).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 209011590897 - 2⁴ = 209011590881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (209011590877) 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 7 ways as a sum of consecutive naturals, for example, 29949448 + ... + 29956425.

It is an arithmetic number, because the mean of its divisors is an integer number (34865218668).

Almost surely, 2^209011590897 is an apocalyptic number.

It is an amenable number.

209011590897 is a deficient number, since it is larger than the sum of its proper divisors (69910158447).

209011590897 is a wasteful number, since it uses less digits than its factorization.

209011590897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59907039.

The product of its (nonzero) digits is 408240, while the sum is 51.

The spelling of 209011590897 in words is "two hundred nine billion, eleven million, five hundred ninety thousand, eight hundred ninety-seven".