203919149568 has 40 divisors (see below), whose sum is σ = 543253363488. Its totient is φ = 67973049344.

The previous prime is 203919149549. The next prime is 203919149591. The reversal of 203919149568 is 865941919302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66378396 + ... + 66381467.

Almost surely, 2^203919149568 is an apocalyptic number.

It is an amenable number.

203919149568 is an abundant number, since it is smaller than the sum of its proper divisors (339334213920).

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

203919149568 is an equidigital number, since it uses as much as digits as its factorization.

203919149568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132759884 (or 132759868 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 203919149568 in words is "two hundred three billion, nine hundred nineteen million, one hundred forty-nine thousand, five hundred sixty-eight".