13312277638 has 32 divisors (see below), whose sum is σ = 21899354400. Its totient is φ = 6019008000.

The previous prime is 13312277633. The next prime is 13312277677. The reversal of 13312277638 is 83677221331.

13312277638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13312277638² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13312277594 and 13312277603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312277633) 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 15 ways as a sum of consecutive naturals, for example, 3537678 + ... + 3541438.

It is an arithmetic number, because the mean of its divisors is an integer number (684354825).

Almost surely, 2^13312277638 is an apocalyptic number.

13312277638 is a deficient number, since it is larger than the sum of its proper divisors (8587076762).

13312277638 is a wasteful number, since it uses less digits than its factorization.

13312277638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584.

The product of its digits is 254016, while the sum is 43.

Adding to 13312277638 its reverse (83677221331), we get a palindrome (96989498969).

The spelling of 13312277638 in words is "thirteen billion, three hundred twelve million, two hundred seventy-seven thousand, six hundred thirty-eight".