18122744355 has 32 divisors (see below), whose sum is σ = 29819458368. Its totient is φ = 9392947200.

The previous prime is 18122744347. The next prime is 18122744359. The reversal of 18122744355 is 55344722181.

It is not a de Polignac number, because 18122744355 - 2³ = 18122744347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18122744359) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 100725 + ... + 215385.

It is an arithmetic number, because the mean of its divisors is an integer number (931858074).

Almost surely, 2^18122744355 is an apocalyptic number.

18122744355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18122744355 is a deficient number, since it is larger than the sum of its proper divisors (11696714013).

18122744355 is a wasteful number, since it uses less digits than its factorization.

18122744355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114967.

The product of its digits is 268800, while the sum is 42.

The spelling of 18122744355 in words is "eighteen billion, one hundred twenty-two million, seven hundred forty-four thousand, three hundred fifty-five".