16485991737 has 4 divisors (see below), whose sum is σ = 21981322320. Its totient is φ = 10990661156.

The previous prime is 16485991733. The next prime is 16485991759. The reversal of 16485991737 is 73719958461.

16485991737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16485991737 - 2² = 16485991733 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16485991733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2747665287 + ... + 2747665292.

It is an arithmetic number, because the mean of its divisors is an integer number (5495330580).

Almost surely, 2^16485991737 is an apocalyptic number.

It is an amenable number.

16485991737 is a deficient number, since it is larger than the sum of its proper divisors (5495330583).

16485991737 is an equidigital number, since it uses as much as digits as its factorization.

16485991737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5495330582.

The product of its digits is 11430720, while the sum is 60.

The spelling of 16485991737 in words is "sixteen billion, four hundred eighty-five million, nine hundred ninety-one thousand, seven hundred thirty-seven".