13628353381 has 8 divisors (see below), whose sum is σ = 13665529944. Its totient is φ = 13591226880.

The previous prime is 13628353339. The next prime is 13628353397. The reversal of 13628353381 is 18335382631.

It can be written as a sum of positive squares in 4 ways, for example, as 2980177281 + 10648176100 = 54591^2 + 103190^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13628353381 - 2²³ = 13619964773 is a prime.

It is a super-2 number, since 2×13628353381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13628356381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568861 + ... + 592333.

It is an arithmetic number, because the mean of its divisors is an integer number (1708191243).

Almost surely, 2^13628353381 is an apocalyptic number.

It is an amenable number.

13628353381 is a deficient number, since it is larger than the sum of its proper divisors (37176563).

13628353381 is an equidigital number, since it uses as much as digits as its factorization.

13628353381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25031.

The product of its digits is 311040, while the sum is 43.

The spelling of 13628353381 in words is "thirteen billion, six hundred twenty-eight million, three hundred fifty-three thousand, three hundred eighty-one".