209028929912 has 32 divisors (see below), whose sum is σ = 446148708480. Its totient is φ = 90882142560.

The previous prime is 209028929897. The next prime is 209028929959. The reversal of 209028929912 is 219929820902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51635558 + ... + 51639605.

It is an arithmetic number, because the mean of its divisors is an integer number (13942147140).

Almost surely, 2^209028929912 is an apocalyptic number.

209028929912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

209028929912 is an abundant number, since it is smaller than the sum of its proper divisors (237119778568).

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

209028929912 is a wasteful number, since it uses less digits than its factorization.

209028929912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103275203 (or 103275199 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 209028929912 in words is "two hundred nine billion, twenty-eight million, nine hundred twenty-nine thousand, nine hundred twelve".