13406773645 has 8 divisors (see below), whose sum is σ = 16123334904. Its totient is φ = 10701947904.

The previous prime is 13406773643. The next prime is 13406773657. The reversal of 13406773645 is 54637760431.

13406773645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 307055529 + 13099718116 = 17523^2 + 114454^2 .

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 13406773645 - 2¹ = 13406773643 is a prime.

It is a super-3 number, since 3×13406773645³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13406773595 and 13406773604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13406773643) 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 7 ways as a sum of consecutive naturals, for example, 2931364 + ... + 2935933.

It is an arithmetic number, because the mean of its divisors is an integer number (2015416863).

Almost surely, 2^13406773645 is an apocalyptic number.

It is an amenable number.

13406773645 is a deficient number, since it is larger than the sum of its proper divisors (2716561259).

13406773645 is an equidigital number, since it uses as much as digits as its factorization.

13406773645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5867759.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 13406773645 in words is "thirteen billion, four hundred six million, seven hundred seventy-three thousand, six hundred forty-five".