16939575973 has 8 divisors (see below), whose sum is σ = 17283849336. Its totient is φ = 16596216000.

The previous prime is 16939575971. The next prime is 16939576099. The reversal of 16939575973 is 37957593961.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4637882404 + 12301693569 = 68102^2 + 110913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16939575973 - 2¹ = 16939575971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16939575971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190818 + ... + 265123.

It is an arithmetic number, because the mean of its divisors is an integer number (2160481167).

Almost surely, 2^16939575973 is an apocalyptic number.

It is an amenable number.

16939575973 is a deficient number, since it is larger than the sum of its proper divisors (344273363).

16939575973 is an equidigital number, since it uses as much as digits as its factorization.

16939575973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456695.

The product of its digits is 48223350, while the sum is 64.

The spelling of 16939575973 in words is "sixteen billion, nine hundred thirty-nine million, five hundred seventy-five thousand, nine hundred seventy-three".