209033729012 has 6 divisors (see below), whose sum is σ = 365809025778. Its totient is φ = 104516864504.

The previous prime is 209033729011. The next prime is 209033729041. The reversal of 209033729012 is 210927330902.

209033729012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 208114790416 + 918938596 = 456196^2 + 30314^2 .

It is a super-2 number, since 2×209033729012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209033729011) 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 as a sum of consecutive naturals, namely, 26129216123 + ... + 26129216130.

It is an arithmetic number, because the mean of its divisors is an integer number (60968170963).

Almost surely, 2^209033729012 is an apocalyptic number.

It is an amenable number.

209033729012 is a deficient number, since it is larger than the sum of its proper divisors (156775296766).

209033729012 is a wasteful number, since it uses less digits than its factorization.

209033729012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52258432257 (or 52258432255 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The spelling of 209033729012 in words is "two hundred nine billion, thirty-three million, seven hundred twenty-nine thousand, twelve".