202011171664 has 10 divisors (see below), whose sum is σ = 391396645130. Its totient is φ = 101005585824.

The previous prime is 202011171647. The next prime is 202011171697. The reversal of 202011171664 is 466171110202.

202011171664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 158117569600 + 43893602064 = 397640^2 + 209508^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6312849099 + ... + 6312849130.

It is an arithmetic number, because the mean of its divisors is an integer number (39139664513).

Almost surely, 2^202011171664 is an apocalyptic number.

It is an amenable number.

202011171664 is a deficient number, since it is larger than the sum of its proper divisors (189385473466).

202011171664 is a wasteful number, since it uses less digits than its factorization.

202011171664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625698237 (or 12625698231 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

Adding to 202011171664 its reverse (466171110202), we get a palindrome (668182281866).

The spelling of 202011171664 in words is "two hundred two billion, eleven million, one hundred seventy-one thousand, six hundred sixty-four".