201146663506 has 16 divisors (see below), whose sum is σ = 304700140800. Its totient is φ = 99581235408.

The previous prime is 201146663489. The next prime is 201146663573. The reversal of 201146663506 is 605366641102.

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 7 ways as a sum of consecutive naturals, for example, 6900 + ... + 634303.

It is an arithmetic number, because the mean of its divisors is an integer number (19043758800).

Almost surely, 2^201146663506 is an apocalyptic number.

201146663506 is a deficient number, since it is larger than the sum of its proper divisors (103553477294).

201146663506 is a wasteful number, since it uses less digits than its factorization.

201146663506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642753.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 201146663506 in words is "two hundred one billion, one hundred forty-six million, six hundred sixty-three thousand, five hundred six".