203170883138 has 16 divisors (see below), whose sum is σ = 318325999680. Its totient is φ = 97130235216.

The previous prime is 203170883107. The next prime is 203170883197. The reversal of 203170883138 is 831388071302.

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, 16998620 + ... + 17010567.

It is an arithmetic number, because the mean of its divisors is an integer number (19895374980).

Almost surely, 2^203170883138 is an apocalyptic number.

203170883138 is a deficient number, since it is larger than the sum of its proper divisors (115155116542).

203170883138 is a wasteful number, since it uses less digits than its factorization.

203170883138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34009321.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 203170883138 in words is "two hundred three billion, one hundred seventy million, eight hundred eighty-three thousand, one hundred thirty-eight".