13571648638 has 8 divisors (see below), whose sum is σ = 20369171160. Its totient is φ = 6781924920.

The previous prime is 13571648621. The next prime is 13571648677. The reversal of 13571648638 is 83684617531.

It is a happy number.

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, 1945348 + ... + 1952311.

It is an arithmetic number, because the mean of its divisors is an integer number (2546146395).

Almost surely, 2^13571648638 is an apocalyptic number.

13571648638 is a deficient number, since it is larger than the sum of its proper divisors (6797522522).

13571648638 is a wasteful number, since it uses less digits than its factorization.

13571648638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899402.

The product of its digits is 2903040, while the sum is 52.

The spelling of 13571648638 in words is "thirteen billion, five hundred seventy-one million, six hundred forty-eight thousand, six hundred thirty-eight".