16945919243 has 16 divisors (see below), whose sum is σ = 19793846880. Its totient is φ = 14336256000.

The previous prime is 16945919197. The next prime is 16945919273. The reversal of 16945919243 is 34291954961.

16945919243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16945919243 - 2²⁸ = 16677483787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16945919273) 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 15 ways as a sum of consecutive naturals, for example, 492458 + ... + 525743.

It is an arithmetic number, because the mean of its divisors is an integer number (1237115430).

Almost surely, 2^16945919243 is an apocalyptic number.

16945919243 is a deficient number, since it is larger than the sum of its proper divisors (2847927637).

16945919243 is a wasteful number, since it uses less digits than its factorization.

16945919243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018318.

The product of its digits is 2099520, while the sum is 53.

The spelling of 16945919243 in words is "sixteen billion, nine hundred forty-five million, nine hundred nineteen thousand, two hundred forty-three".