13451347573 has 4 divisors (see below), whose sum is σ = 13451706828. Its totient is φ = 13450988320.

The previous prime is 13451347537. The next prime is 13451347579. The reversal of 13451347573 is 37574315431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37574315431 = 19 ⋅1977595549.

It can be written as a sum of positive squares in 2 ways, for example, as 11384463204 + 2066884369 = 106698^2 + 45463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13451347573 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 (13451347579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115936 + ... + 200857.

It is an arithmetic number, because the mean of its divisors is an integer number (3362926707).

Almost surely, 2^13451347573 is an apocalyptic number.

It is an amenable number.

13451347573 is a deficient number, since it is larger than the sum of its proper divisors (359255).

13451347573 is an equidigital number, since it uses as much as digits as its factorization.

13451347573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359254.

The product of its digits is 529200, while the sum is 43.

The spelling of 13451347573 in words is "thirteen billion, four hundred fifty-one million, three hundred forty-seven thousand, five hundred seventy-three".