27121758118 has 64 divisors (see below), whose sum is σ = 50680143360. Its totient is φ = 10599724800.

The previous prime is 27121758089. The next prime is 27121758133. The reversal of 27121758118 is 81185712172.

It is a happy number.

It is a super-2 number, since 2×27121758118² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5335338 + ... + 5340418.

It is an arithmetic number, because the mean of its divisors is an integer number (791877240).

Almost surely, 2^27121758118 is an apocalyptic number.

27121758118 is a deficient number, since it is larger than the sum of its proper divisors (23558385242).

27121758118 is a wasteful number, since it uses less digits than its factorization.

27121758118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453.

The product of its digits is 62720, while the sum is 43.

The spelling of 27121758118 in words is "twenty-seven billion, one hundred twenty-one million, seven hundred fifty-eight thousand, one hundred eighteen".