205045431670 has 8 divisors (see below), whose sum is σ = 369081777024. Its totient is φ = 82018172664.

The previous prime is 205045431631. The next prime is 205045431707. The reversal of 205045431670 is 76134540502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10252271574 + ... + 10252271593.

It is an arithmetic number, because the mean of its divisors is an integer number (46135222128).

Almost surely, 2^205045431670 is an apocalyptic number.

205045431670 is a deficient number, since it is larger than the sum of its proper divisors (164036345354).

205045431670 is a wasteful number, since it uses less digits than its factorization.

205045431670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20504543174.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 205045431670 in words is "two hundred five billion, forty-five million, four hundred thirty-one thousand, six hundred seventy".