204505365442540 has 48 divisors (see below), whose sum is σ = 448295922627840. Its totient is φ = 78273891210240.

The previous prime is 204505365442523. The next prime is 204505365442579. The reversal of 204505365442540 is 45244563505402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1853019897 + ... + 1853130256.

It is an arithmetic number, because the mean of its divisors is an integer number (9339498388080).

Almost surely, 2^{204505365442540} is an apocalyptic number.

204505365442540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204505365442540 is an abundant number, since it is smaller than the sum of its proper divisors (243790557185300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204505365442540 is a wasteful number, since it uses less digits than its factorization.

204505365442540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706150282 (or 3706150280 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 49.

The spelling of 204505365442540 in words is "two hundred four trillion, five hundred five billion, three hundred sixty-five million, four hundred forty-two thousand, five hundred forty".