16939269645 has 16 divisors (see below), whose sum is σ = 27547141632. Its totient is φ = 8886173760.

The previous prime is 16939269631. The next prime is 16939269653. The reversal of 16939269645 is 54696293961.

It is not a de Polignac number, because 16939269645 - 2⁹ = 16939269133 is a prime.

It is a super-3 number, since 3×16939269645³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9255517 + ... + 9257346.

It is an arithmetic number, because the mean of its divisors is an integer number (1721696352).

Almost surely, 2^16939269645 is an apocalyptic number.

16939269645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16939269645 is a deficient number, since it is larger than the sum of its proper divisors (10607871987).

16939269645 is a wasteful number, since it uses less digits than its factorization.

16939269645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18512932.

The product of its digits is 18895680, while the sum is 60.

The spelling of 16939269645 in words is "sixteen billion, nine hundred thirty-nine million, two hundred sixty-nine thousand, six hundred forty-five".