206321955929 has 48 divisors (see below), whose sum is σ = 223591127760. Its totient is φ = 190279964160.

The previous prime is 206321955901. The next prime is 206321955949. The reversal of 206321955929 is 929559123602.

It can be written as a sum of positive squares in 8 ways, for example, as 2167088704 + 204154867225 = 46552^2 + 451835^2 .

It is not a de Polignac number, because 206321955929 - 2⁸ = 206321955673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206321955949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 553141787 + ... + 553142159.

It is an arithmetic number, because the mean of its divisors is an integer number (4658148495).

Almost surely, 2^206321955929 is an apocalyptic number.

It is an amenable number.

206321955929 is a deficient number, since it is larger than the sum of its proper divisors (17269171831).

206321955929 is a wasteful number, since it uses less digits than its factorization.

206321955929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 53.

The spelling of 206321955929 in words is "two hundred six billion, three hundred twenty-one million, nine hundred fifty-five thousand, nine hundred twenty-nine".