206729429907 has 32 divisors (see below), whose sum is σ = 370089054720. Its totient is φ = 99130993920.

The previous prime is 206729429903. The next prime is 206729429911. The reversal of 206729429907 is 709924927602.

It is an interprime number because it is at equal distance from previous prime (206729429903) and next prime (206729429911).

It is not a de Polignac number, because 206729429907 - 2² = 206729429903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206729429903) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 34417482 + ... + 34423487.

It is an arithmetic number, because the mean of its divisors is an integer number (11565282960).

Almost surely, 2^206729429907 is an apocalyptic number.

206729429907 is a deficient number, since it is larger than the sum of its proper divisors (163359624813).

206729429907 is a wasteful number, since it uses less digits than its factorization.

206729429907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68841003.

The product of its (nonzero) digits is 6858432, while the sum is 57.

It can be divided in two parts, 206729 and 429907, that added together give a palindrome (636636).

The spelling of 206729429907 in words is "two hundred six billion, seven hundred twenty-nine million, four hundred twenty-nine thousand, nine hundred seven".