27434411618 has 4 divisors (see below), whose sum is σ = 41151617430. Its totient is φ = 13717205808.

The previous prime is 27434411617. The next prime is 27434411621. The reversal of 27434411618 is 81611443472.

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., 27321775849 + 112635769 = 165293^2 + 10613^2 .

It is not an unprimeable number, because it can be changed into a prime (27434411617) 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, 6858602903 + ... + 6858602906.

Almost surely, 2^27434411618 is an apocalyptic number.

27434411618 is a deficient number, since it is larger than the sum of its proper divisors (13717205812).

27434411618 is a wasteful number, since it uses less digits than its factorization.

27434411618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13717205811.

The product of its digits is 129024, while the sum is 41.

The spelling of 27434411618 in words is "twenty-seven billion, four hundred thirty-four million, four hundred eleven thousand, six hundred eighteen".