638612014733 has 48 divisors (see below), whose sum is σ = 833248225152. Its totient is φ = 475449744000.

The previous prime is 638612014709. The next prime is 638612014739. The reversal of 638612014733 is 337410216836.

It is not a de Polignac number, because 638612014733 - 2³² = 634317047437 is a prime.

It is a super-2 number, since 2×638612014733² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638612014739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38321423 + ... + 38338083.

It is an arithmetic number, because the mean of its divisors is an integer number (17359338024).

Almost surely, 2^638612014733 is an apocalyptic number.

It is an amenable number.

638612014733 is a deficient number, since it is larger than the sum of its proper divisors (194636210419).

638612014733 is a wasteful number, since it uses less digits than its factorization.

638612014733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17666 (or 17643 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 638612014733 in words is "six hundred thirty-eight billion, six hundred twelve million, fourteen thousand, seven hundred thirty-three".