209159270064 has 80 divisors (see below), whose sum is σ = 600623283840. Its totient is φ = 69689712960.

The previous prime is 209159270011. The next prime is 209159270077. The reversal of 209159270064 is 460072951902.

209159270064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 910759 + ... + 1117049.

It is an arithmetic number, because the mean of its divisors is an integer number (7507791048).

Almost surely, 2^209159270064 is an apocalyptic number.

209159270064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

209159270064 is an abundant number, since it is smaller than the sum of its proper divisors (391464013776).

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

209159270064 is a wasteful number, since it uses less digits than its factorization.

209159270064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208655 (or 208643 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 209159270064 in words is "two hundred nine billion, one hundred fifty-nine million, two hundred seventy thousand, sixty-four".