203670138871 has 4 divisors (see below), whose sum is σ = 203857508992. Its totient is φ = 203482768752.

The previous prime is 203670138863. The next prime is 203670138901. The reversal of 203670138871 is 178831076302.

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

It is a cyclic number.

It is not a de Polignac number, because 203670138871 - 2³ = 203670138863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203670138271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93683430 + ... + 93685603.

It is an arithmetic number, because the mean of its divisors is an integer number (50964377248).

Almost surely, 2^203670138871 is an apocalyptic number.

203670138871 is a deficient number, since it is larger than the sum of its proper divisors (187370121).

203670138871 is a wasteful number, since it uses less digits than its factorization.

203670138871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187370120.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 203670138871 in words is "two hundred three billion, six hundred seventy million, one hundred thirty-eight thousand, eight hundred seventy-one".