13321442045 has 4 divisors (see below), whose sum is σ = 15985730460. Its totient is φ = 10657153632.

The previous prime is 13321442023. The next prime is 13321442053. The reversal of 13321442045 is 54024412331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54024412331 = 200063 ⋅270037.

It can be written as a sum of positive squares in 2 ways, for example, as 2509809604 + 10811632441 = 50098^2 + 103979^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321442045 - 2⁸ = 13321441789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13321441999 and 13321442017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332144200 + ... + 1332144209.

It is an arithmetic number, because the mean of its divisors is an integer number (3996432615).

Almost surely, 2^13321442045 is an apocalyptic number.

It is an amenable number.

13321442045 is a deficient number, since it is larger than the sum of its proper divisors (2664288415).

13321442045 is an equidigital number, since it uses as much as digits as its factorization.

13321442045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664288414.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 13321442045 its reverse (54024412331), we get a palindrome (67345854376).

The spelling of 13321442045 in words is "thirteen billion, three hundred twenty-one million, four hundred forty-two thousand, forty-five".