16773680425 has 6 divisors (see below), whose sum is σ = 20799363758. Its totient is φ = 13418944320.

The previous prime is 16773680401. The next prime is 16773680447. The reversal of 16773680425 is 52408637761.

It can be written as a sum of positive squares in 3 ways, for example, as 179345664 + 16594334761 = 13392^2 + 128819^2 .

It is not a de Polignac number, because 16773680425 - 2¹¹ = 16773678377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 335473584 + ... + 335473633.

Almost surely, 2^16773680425 is an apocalyptic number.

It is an amenable number.

16773680425 is a deficient number, since it is larger than the sum of its proper divisors (4025683333).

16773680425 is an equidigital number, since it uses as much as digits as its factorization.

16773680425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670947227 (or 670947222 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 16773680425 in words is "sixteen billion, seven hundred seventy-three million, six hundred eighty thousand, four hundred twenty-five".