27985932926672 has 80 divisors (see below), whose sum is σ = 64704319229952. Its totient is φ = 11465189915520.

The previous prime is 27985932926671. The next prime is 27985932926713. The reversal of 27985932926672 is 27662923958972.

It is a junction number, because it is equal to n+sod(n) for n = 27985932926593 and 27985932926602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27985932926671) 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, 589193 + ... + 7504599.

Almost surely, 2^{27985932926672} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27985932926672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32352159614976).

27985932926672 is an abundant number, since it is smaller than the sum of its proper divisors (36718386303280).

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

27985932926672 is a wasteful number, since it uses less digits than its factorization.

27985932926672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6917016 (or 6917010 counting only the distinct ones).

The product of its digits is 2469035520, while the sum is 77.

The spelling of 27985932926672 in words is "twenty-seven trillion, nine hundred eighty-five billion, nine hundred thirty-two million, nine hundred twenty-six thousand, six hundred seventy-two".