206604026542 has 4 divisors (see below), whose sum is σ = 309906039816. Its totient is φ = 103302013270.

The previous prime is 206604026539. The next prime is 206604026569. The reversal of 206604026542 is 245620406602.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 51651006634 + ... + 51651006637.

It is an arithmetic number, because the mean of its divisors is an integer number (77476509954).

Almost surely, 2^206604026542 is an apocalyptic number.

206604026542 is a deficient number, since it is larger than the sum of its proper divisors (103302013274).

206604026542 is a wasteful number, since it uses less digits than its factorization.

206604026542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103302013273.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 206604026542 in words is "two hundred six billion, six hundred four million, twenty-six thousand, five hundred forty-two".