27739996245 has 48 divisors (see below), whose sum is σ = 54827306352. Its totient is φ = 12853278720.

The previous prime is 27739996243. The next prime is 27739996253. The reversal of 27739996245 is 54269993772.

27739996245 is a `hidden beast` number, since 277 + 39 + 9 + 96 + 245 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1855369476 + 25884626769 = 43074^2 + 160887^2 .

It is not a de Polignac number, because 27739996245 - 2¹ = 27739996243 is a prime.

It is a super-2 number, since 2×27739996245² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27739996243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1384726 + ... + 1404615.

It is an arithmetic number, because the mean of its divisors is an integer number (1142235549).

Almost surely, 2^27739996245 is an apocalyptic number.

It is an amenable number.

27739996245 is a deficient number, since it is larger than the sum of its proper divisors (27087310107).

27739996245 is a wasteful number, since it uses less digits than its factorization.

27739996245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789382 (or 2789379 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 63.

The spelling of 27739996245 in words is "twenty-seven billion, seven hundred thirty-nine million, nine hundred ninety-six thousand, two hundred forty-five".