201002199966 has 24 divisors (see below), whose sum is σ = 435543258384. Its totient is φ = 66994811520.

The previous prime is 201002199961. The next prime is 201002199977. The reversal of 201002199966 is 669991200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002199961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281715 + ... + 693806.

It is an arithmetic number, because the mean of its divisors is an integer number (18147635766).

Almost surely, 2^201002199966 is an apocalyptic number.

201002199966 is an abundant number, since it is smaller than the sum of its proper divisors (234541058418).

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

201002199966 is a wasteful number, since it uses less digits than its factorization.

201002199966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986976 (or 986973 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 201002199966 in words is "two hundred one billion, two million, one hundred ninety-nine thousand, nine hundred sixty-six".