16631135606 has 4 divisors (see below), whose sum is σ = 24946703412. Its totient is φ = 8315567802.

The previous prime is 16631135569. The next prime is 16631135693. The reversal of 16631135606 is 60653113661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16631135606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4157783900 + ... + 4157783903.

It is an arithmetic number, because the mean of its divisors is an integer number (6236675853).

Almost surely, 2^16631135606 is an apocalyptic number.

16631135606 is a deficient number, since it is larger than the sum of its proper divisors (8315567806).

16631135606 is an equidigital number, since it uses as much as digits as its factorization.

16631135606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8315567805.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 16631135606 in words is "sixteen billion, six hundred thirty-one million, one hundred thirty-five thousand, six hundred six".