201717604064 has 48 divisors (see below), whose sum is σ = 397893892032. Its totient is φ = 100665404928.

The previous prime is 201717604063. The next prime is 201717604087. The reversal of 201717604064 is 460406717102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201717604063) 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 7 ways as a sum of consecutive naturals, for example, 46125782 + ... + 46130154.

It is an arithmetic number, because the mean of its divisors is an integer number (8289456084).

Almost surely, 2^201717604064 is an apocalyptic number.

It is an amenable number.

201717604064 is a deficient number, since it is larger than the sum of its proper divisors (196176287968).

201717604064 is a wasteful number, since it uses less digits than its factorization.

201717604064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6819 (or 6811 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 201717604064 in words is "two hundred one billion, seven hundred seventeen million, six hundred four thousand, sixty-four".