207105805404 has 18 divisors (see below), whose sum is σ = 523517452640. Its totient is φ = 69035268456.

The previous prime is 207105805391. The next prime is 207105805409. The reversal of 207105805404 is 404508501702.

207105805404 is a `hidden beast` number, since 2 + 0 + 7 + 105 + 8 + 0 + 540 + 4 = 666.

207105805404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5752939039 = 207105805404 / (2 + 0 + 7 + 1 + 0 + 5 + 8 + 0 + 5 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207105805409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2876469484 + ... + 2876469555.

Almost surely, 2^207105805404 is an apocalyptic number.

It is an amenable number.

207105805404 is an abundant number, since it is smaller than the sum of its proper divisors (316411647236).

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

207105805404 is a wasteful number, since it uses less digits than its factorization.

207105805404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752939049 (or 5752939044 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The spelling of 207105805404 in words is "two hundred seven billion, one hundred five million, eight hundred five thousand, four hundred four".