18069049361 has 16 divisors (see below), whose sum is σ = 20198844288. Its totient is φ = 16020700800.

The previous prime is 18069049319. The next prime is 18069049367. The reversal of 18069049361 is 16394096081.

It is not a de Polignac number, because 18069049361 - 2³⁴ = 889180177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18069049367) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2821415 + ... + 2827811.

It is an arithmetic number, because the mean of its divisors is an integer number (1262427768).

Almost surely, 2^18069049361 is an apocalyptic number.

18069049361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18069049361 is a deficient number, since it is larger than the sum of its proper divisors (2129794927).

18069049361 is a wasteful number, since it uses less digits than its factorization.

18069049361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12712.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 18069049361 in words is "eighteen billion, sixty-nine million, forty-nine thousand, three hundred sixty-one".