13678187407638 has 64 divisors (see below), whose sum is σ = 31100133792000. Its totient is φ = 3975739251840.

The previous prime is 13678187407637. The next prime is 13678187407757. The reversal of 13678187407638 is 83670478187631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13678187407637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12705628 + ... + 13740063.

It is an arithmetic number, because the mean of its divisors is an integer number (485939590500).

Almost surely, 2^{13678187407638} is an apocalyptic number.

13678187407638 is an abundant number, since it is smaller than the sum of its proper divisors (17421946384362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13678187407638 is a wasteful number, since it uses less digits than its factorization.

13678187407638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26446077.

The product of its (nonzero) digits is 227598336, while the sum is 69.

The spelling of 13678187407638 in words is "thirteen trillion, six hundred seventy-eight billion, one hundred eighty-seven million, four hundred seven thousand, six hundred thirty-eight".