27916874638 has 16 divisors (see below), whose sum is σ = 42243586560. Its totient is φ = 13836145816.

The previous prime is 27916874617. The next prime is 27916874639. The reversal of 27916874638 is 83647861972.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27916874639) 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, 3495 + ... + 236317.

It is an arithmetic number, because the mean of its divisors is an integer number (2640224160).

Almost surely, 2^27916874638 is an apocalyptic number.

27916874638 is a deficient number, since it is larger than the sum of its proper divisors (14326711922).

27916874638 is a wasteful number, since it uses less digits than its factorization.

27916874638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233351.

The product of its digits is 24385536, while the sum is 61.

The spelling of 27916874638 in words is "twenty-seven billion, nine hundred sixteen million, eight hundred seventy-four thousand, six hundred thirty-eight".