13459355578 has 4 divisors (see below), whose sum is σ = 20189033370. Its totient is φ = 6729677788.

The previous prime is 13459355563. The next prime is 13459355599. The reversal of 13459355578 is 87555395431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87555395431 = 7 ⋅12507913633.

It can be written as a sum of positive squares in only one way, i.e., 9532202689 + 3927152889 = 97633^2 + 62667^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364838893 + ... + 3364838896.

Almost surely, 2^13459355578 is an apocalyptic number.

13459355578 is a deficient number, since it is larger than the sum of its proper divisors (6729677792).

13459355578 is an equidigital number, since it uses as much as digits as its factorization.

13459355578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6729677791.

The product of its digits is 11340000, while the sum is 55.

The spelling of 13459355578 in words is "thirteen billion, four hundred fifty-nine million, three hundred fifty-five thousand, five hundred seventy-eight".