13840436678 has 16 divisors (see below), whose sum is σ = 21984080400. Its totient is φ = 6512491776.

The previous prime is 13840436677. The next prime is 13840436689. The reversal of 13840436678 is 87663404831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13840436677) 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, 567173 + ... + 591071.

It is an arithmetic number, because the mean of its divisors is an integer number (1374005025).

Almost surely, 2^13840436678 is an apocalyptic number.

13840436678 is a deficient number, since it is larger than the sum of its proper divisors (8143643722).

13840436678 is a wasteful number, since it uses less digits than its factorization.

13840436678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40951.

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 13840436678 in words is "thirteen billion, eight hundred forty million, four hundred thirty-six thousand, six hundred seventy-eight".