27971172099983 has 16 divisors (see below), whose sum is σ = 33058575120384. Its totient is φ = 23159477184480.

The previous prime is 27971172099977. The next prime is 27971172100013. The reversal of 27971172099983 is 38999027117972.

It is not a de Polignac number, because 27971172099983 - 2⁴⁴ = 10378986055567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27971172099983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27971172099953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117705260 + ... + 117942657.

It is an arithmetic number, because the mean of its divisors is an integer number (2066160945024).

Almost surely, 2^{27971172099983} is an apocalyptic number.

27971172099983 is a deficient number, since it is larger than the sum of its proper divisors (5087403020401).

27971172099983 is a wasteful number, since it uses less digits than its factorization.

27971172099983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235648502.

The product of its (nonzero) digits is 216040608, while the sum is 74.

The spelling of 27971172099983 in words is "twenty-seven trillion, nine hundred seventy-one billion, one hundred seventy-two million, ninety-nine thousand, nine hundred eighty-three".