16631232201 has 32 divisors (see below), whose sum is σ = 24883689600. Its totient is φ = 10977707520.

The previous prime is 16631232193. The next prime is 16631232217. The reversal of 16631232201 is 10223213661.

16631232201 is a `hidden beast` number, since 1 + 6 + 631 + 2 + 3 + 2 + 20 + 1 = 666.

It is not a de Polignac number, because 16631232201 - 2³ = 16631232193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16631232001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1611265 + ... + 1621553.

It is an arithmetic number, because the mean of its divisors is an integer number (777615300).

Almost surely, 2^16631232201 is an apocalyptic number.

It is an amenable number.

16631232201 is a deficient number, since it is larger than the sum of its proper divisors (8252457399).

16631232201 is a wasteful number, since it uses less digits than its factorization.

16631232201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10886 (or 10880 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 16631232201 its reverse (10223213661), we get a palindrome (26854445862).

It can be divided in two parts, 16631 and 232201, that added together give a 5-th power (248832 = 12⁵).

The spelling of 16631232201 in words is "sixteen billion, six hundred thirty-one million, two hundred thirty-two thousand, two hundred one".