13581955238 has 8 divisors (see below), whose sum is σ = 20509664400. Its totient is φ = 6745400440.

The previous prime is 13581955217. The next prime is 13581955243. The reversal of 13581955238 is 83255918531.

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

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, 22788218 + ... + 22788813.

It is an arithmetic number, because the mean of its divisors is an integer number (2563708050).

Almost surely, 2^13581955238 is an apocalyptic number.

13581955238 is a deficient number, since it is larger than the sum of its proper divisors (6927709162).

13581955238 is a wasteful number, since it uses less digits than its factorization.

13581955238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45577182.

The product of its digits is 1296000, while the sum is 50.

The spelling of 13581955238 in words is "thirteen billion, five hundred eighty-one million, nine hundred fifty-five thousand, two hundred thirty-eight".