16734463645 has 4 divisors (see below), whose sum is σ = 20081356380. Its totient is φ = 13387570912.

The previous prime is 16734463619. The next prime is 16734463649. The reversal of 16734463645 is 54636443761.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3610928281 + 13123535364 = 60091^2 + 114558^2 .

It is a cyclic number.

It is not a de Polignac number, because 16734463645 - 2¹³ = 16734455453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16734463649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673446360 + ... + 1673446369.

It is an arithmetic number, because the mean of its divisors is an integer number (5020339095).

Almost surely, 2^16734463645 is an apocalyptic number.

It is an amenable number.

16734463645 is a deficient number, since it is larger than the sum of its proper divisors (3346892735).

16734463645 is an equidigital number, since it uses as much as digits as its factorization.

16734463645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346892734.

The product of its digits is 4354560, while the sum is 49.

The spelling of 16734463645 in words is "sixteen billion, seven hundred thirty-four million, four hundred sixty-three thousand, six hundred forty-five".