13745729497 has 4 divisors (see below), whose sum is σ = 13750005556. Its totient is φ = 13741453440.

The previous prime is 13745729489. The next prime is 13745729509. The reversal of 13745729497 is 79492754731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79492754731 = 13 ⋅6114827287.

It can be written as a sum of positive squares in 2 ways, for example, as 12955220041 + 790509456 = 113821^2 + 28116^2 .

It is a cyclic number.

It is not a de Polignac number, because 13745729497 - 2³ = 13745729489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13745729467) 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, 2133204 + ... + 2139637.

It is an arithmetic number, because the mean of its divisors is an integer number (3437501389).

Almost surely, 2^13745729497 is an apocalyptic number.

It is an amenable number.

13745729497 is a deficient number, since it is larger than the sum of its proper divisors (4276059).

13745729497 is an equidigital number, since it uses as much as digits as its factorization.

13745729497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276058.

The product of its digits is 13335840, while the sum is 58.

The spelling of 13745729497 in words is "thirteen billion, seven hundred forty-five million, seven hundred twenty-nine thousand, four hundred ninety-seven".