201056666946 has 16 divisors (see below), whose sum is σ = 404154520704. Its totient is φ = 66678691184.

The previous prime is 201056666917. The next prime is 201056666947. The reversal of 201056666946 is 649666650102.

It is not an unprimeable number, because it can be changed into a prime (201056666947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85048170 + ... + 85050533.

It is an arithmetic number, because the mean of its divisors is an integer number (25259657544).

Almost surely, 2^201056666946 is an apocalyptic number.

201056666946 is an abundant number, since it is smaller than the sum of its proper divisors (203097853758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201056666946 is a wasteful number, since it uses less digits than its factorization.

201056666946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170098905.

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 201056666946 in words is "two hundred one billion, fifty-six million, six hundred sixty-six thousand, nine hundred forty-six".