204502565542 has 16 divisors (see below), whose sum is σ = 343684902672. Its totient is φ = 90443394720.

The previous prime is 204502565383. The next prime is 204502565563. The reversal of 204502565542 is 245565205402.

It is a junction number, because it is equal to n+sod(n) for n = 204502565495 and 204502565504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125615013 + ... + 125616640.

It is an arithmetic number, because the mean of its divisors is an integer number (21480306417).

Almost surely, 2^204502565542 is an apocalyptic number.

204502565542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204502565542 is a deficient number, since it is larger than the sum of its proper divisors (139182337130).

204502565542 is a wasteful number, since it uses less digits than its factorization.

204502565542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251231703.

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 204502565542 in words is "two hundred four billion, five hundred two million, five hundred sixty-five thousand, five hundred forty-two".