27740887442 has 4 divisors (see below), whose sum is σ = 41611331166. Its totient is φ = 13870443720.

The previous prime is 27740887441. The next prime is 27740887469. The reversal of 27740887442 is 24478804772.

It is a happy number.

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., 25956754321 + 1784133121 = 161111^2 + 42239^2 .

It is not an unprimeable number, because it can be changed into a prime (27740887441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935221859 + ... + 6935221862.

Almost surely, 2^27740887442 is an apocalyptic number.

27740887442 is a deficient number, since it is larger than the sum of its proper divisors (13870443724).

27740887442 is a wasteful number, since it uses less digits than its factorization.

27740887442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13870443723.

The product of its (nonzero) digits is 5619712, while the sum is 53.

The spelling of 27740887442 in words is "twenty-seven billion, seven hundred forty million, eight hundred eighty-seven thousand, four hundred forty-two".