13425503638 has 8 divisors (see below), whose sum is σ = 20345866632. Its totient is φ = 6643548096.

The previous prime is 13425503621. The next prime is 13425503647. The reversal of 13425503638 is 83630552431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13425503638.

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, 34601620 + ... + 34602007.

It is an arithmetic number, because the mean of its divisors is an integer number (2543233329).

Almost surely, 2^13425503638 is an apocalyptic number.

13425503638 is a deficient number, since it is larger than the sum of its proper divisors (6920362994).

13425503638 is an equidigital number, since it uses as much as digits as its factorization.

13425503638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69203726.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 13425503638 in words is "thirteen billion, four hundred twenty-five million, five hundred three thousand, six hundred thirty-eight".