27745050442 has 4 divisors (see below), whose sum is σ = 41617575666. Its totient is φ = 13872525220.

The previous prime is 27745050407. The next prime is 27745050461. The reversal of 27745050442 is 24405054772.

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

It can be written as a sum of positive squares in only one way, i.e., 17150259681 + 10594790761 = 130959^2 + 102931^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 27745050395 and 27745050404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6936262609 + ... + 6936262612.

Almost surely, 2^27745050442 is an apocalyptic number.

27745050442 is a deficient number, since it is larger than the sum of its proper divisors (13872525224).

27745050442 is a wasteful number, since it uses less digits than its factorization.

27745050442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13872525223.

The product of its (nonzero) digits is 313600, while the sum is 40.

The spelling of 27745050442 in words is "twenty-seven billion, seven hundred forty-five million, fifty thousand, four hundred forty-two".