201669698517 has 12 divisors (see below), whose sum is σ = 312793818336. Its totient is φ = 115239827640.

The previous prime is 201669698501. The next prime is 201669698569. The reversal of 201669698517 is 715896966102.

It is not a de Polignac number, because 201669698517 - 2⁴ = 201669698501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201669698317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 685951209 + ... + 685951502.

It is an arithmetic number, because the mean of its divisors is an integer number (26066151528).

Almost surely, 2^201669698517 is an apocalyptic number.

It is an amenable number.

201669698517 is a deficient number, since it is larger than the sum of its proper divisors (111124119819).

201669698517 is a wasteful number, since it uses less digits than its factorization.

201669698517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371902728 (or 1371902721 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 201669698517 in words is "two hundred one billion, six hundred sixty-nine million, six hundred ninety-eight thousand, five hundred seventeen".