27518380042 has 16 divisors (see below), whose sum is σ = 41585076072. Its totient is φ = 13656876480.

The previous prime is 27518380033. The next prime is 27518380051. The reversal of 27518380042 is 24008381572.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27518380033) and next prime (27518380051).

It can be written as a sum of positive squares in 4 ways, for example, as 18501168361 + 9017211681 = 136019^2 + 94959^2 .

It is a super-2 number, since 2×27518380042² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27518379977 and 27518380004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248908 + ... + 342040.

Almost surely, 2^27518380042 is an apocalyptic number.

27518380042 is a deficient number, since it is larger than the sum of its proper divisors (14066696030).

27518380042 is a wasteful number, since it uses less digits than its factorization.

27518380042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94233.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 27518380042 in words is "twenty-seven billion, five hundred eighteen million, three hundred eighty thousand, forty-two".