27907501849 has 4 divisors (see below), whose sum is σ = 27911251764. Its totient is φ = 27903751936.

The previous prime is 27907501847. The next prime is 27907501871. The reversal of 27907501849 is 94810570972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3040419600 + 24867082249 = 55140^2 + 157693^2 .

It is a cyclic number.

It is not a de Polignac number, because 27907501849 - 2¹ = 27907501847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27907501796 and 27907501805.

It is not an unprimeable number, because it can be changed into a prime (27907501847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863772 + ... + 1878685.

It is an arithmetic number, because the mean of its divisors is an integer number (6977812941).

Almost surely, 2^27907501849 is an apocalyptic number.

It is an amenable number.

27907501849 is a deficient number, since it is larger than the sum of its proper divisors (3749915).

27907501849 is an equidigital number, since it uses as much as digits as its factorization.

27907501849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749914.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 27907501849 in words is "twenty-seven billion, nine hundred seven million, five hundred one thousand, eight hundred forty-nine".