203151989966689 has 16 divisors (see below), whose sum is σ = 213073289781120. Its totient is φ = 193322705748480.

The previous prime is 203151989966669. The next prime is 203151989966701. The reversal of 203151989966689 is 986669989151302.

It is a cyclic number.

It is not a de Polignac number, because 203151989966689 - 2⁷ = 203151989966561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203151989966669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7871472 + ... + 21639409.

It is an arithmetic number, because the mean of its divisors is an integer number (13317080611320).

Almost surely, 2^{203151989966689} is an apocalyptic number.

It is an amenable number.

203151989966689 is a deficient number, since it is larger than the sum of its proper divisors (9921299814431).

203151989966689 is a wasteful number, since it uses less digits than its factorization.

203151989966689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29512440.

The product of its (nonzero) digits is 2720977920, while the sum is 82.

The spelling of 203151989966689 in words is "two hundred three trillion, one hundred fifty-one billion, nine hundred eighty-nine million, nine hundred sixty-six thousand, six hundred eighty-nine".