209488912468 has 24 divisors (see below), whose sum is σ = 423458872704. Its totient is φ = 89620924800.

The previous prime is 209488912411. The next prime is 209488912583. The reversal of 209488912468 is 864219884902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140031948 + ... + 140033443.

It is an arithmetic number, because the mean of its divisors is an integer number (17644119696).

Almost surely, 2^209488912468 is an apocalyptic number.

It is an amenable number.

209488912468 is an abundant number, since it is smaller than the sum of its proper divisors (213969960236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209488912468 is a wasteful number, since it uses less digits than its factorization.

209488912468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280065423 (or 280065421 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 61.

The spelling of 209488912468 in words is "two hundred nine billion, four hundred eighty-eight million, nine hundred twelve thousand, four hundred sixty-eight".