206405504602 has 96 divisors (see below), whose sum is σ = 362836837440. Its totient is φ = 87279413760.

The previous prime is 206405504581. The next prime is 206405504611.

206405504602 is nontrivially palindromic in base 10.

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 47 ways as a sum of consecutive naturals, for example, 138619474 + ... + 138620962.

It is an arithmetic number, because the mean of its divisors is an integer number (3779550390).

Almost surely, 2^206405504602 is an apocalyptic number.

206405504602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

206405504602 is a deficient number, since it is larger than the sum of its proper divisors (156431332838).

206405504602 is a wasteful number, since it uses less digits than its factorization.

206405504602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 206405504602 in words is "two hundred six billion, four hundred five million, five hundred four thousand, six hundred two".