638311441353 has 16 divisors (see below), whose sum is σ = 897041459520. Its totient is φ = 403114921664.

The previous prime is 638311441343. The next prime is 638311441357. The reversal of 638311441353 is 353144113836.

638311441353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 638311441353 - 2¹⁴ = 638311424969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (638311441357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69211551 + ... + 69220772.

It is an arithmetic number, because the mean of its divisors is an integer number (56065091220).

Almost surely, 2^638311441353 is an apocalyptic number.

It is an amenable number.

638311441353 is a deficient number, since it is larger than the sum of its proper divisors (258730018167).

638311441353 is a wasteful number, since it uses less digits than its factorization.

638311441353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138432408.

The product of its digits is 311040, while the sum is 42.

The spelling of 638311441353 in words is "six hundred thirty-eight billion, three hundred eleven million, four hundred forty-one thousand, three hundred fifty-three".