27489629438 has 12 divisors (see below), whose sum is σ = 43518902040. Its totient is φ = 13021403076.

The previous prime is 27489629429. The next prime is 27489629467. The reversal of 27489629438 is 83492698472.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19036418 + ... + 19037861.

It is an arithmetic number, because the mean of its divisors is an integer number (3626575170).

Almost surely, 2^27489629438 is an apocalyptic number.

27489629438 is a deficient number, since it is larger than the sum of its proper divisors (16029272602).

27489629438 is a wasteful number, since it uses less digits than its factorization.

27489629438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38074319 (or 38074300 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 62.

The spelling of 27489629438 in words is "twenty-seven billion, four hundred eighty-nine million, six hundred twenty-nine thousand, four hundred thirty-eight".