201663431146 has 8 divisors (see below), whose sum is σ = 303319385280. Its totient is φ = 100556969388.

The previous prime is 201663431117. The next prime is 201663431159. The reversal of 201663431146 is 641134366102.

201663431146 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137372176 + ... + 137373643.

It is an arithmetic number, because the mean of its divisors is an integer number (37914923160).

Almost surely, 2^201663431146 is an apocalyptic number.

201663431146 is a deficient number, since it is larger than the sum of its proper divisors (101655954134).

201663431146 is a wasteful number, since it uses less digits than its factorization.

201663431146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274746188.

The product of its (nonzero) digits is 62208, while the sum is 37.

Adding to 201663431146 its reverse (641134366102), we get a palindrome (842797797248).

The spelling of 201663431146 in words is "two hundred one billion, six hundred sixty-three million, four hundred thirty-one thousand, one hundred forty-six".