18672745773 has 12 divisors (see below), whose sum is σ = 27366118304. Its totient is φ = 11316815400.

The previous prime is 18672745759. The next prime is 18672745789. The reversal of 18672745773 is 37754727681.

It is not a de Polignac number, because 18672745773 - 2⁸ = 18672745517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18672745703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25719673 + ... + 25720398.

Almost surely, 2^18672745773 is an apocalyptic number.

It is an amenable number.

18672745773 is a deficient number, since it is larger than the sum of its proper divisors (8693372531).

18672745773 is a wasteful number, since it uses less digits than its factorization.

18672745773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51440096 (or 51440085 counting only the distinct ones).

The product of its digits is 13829760, while the sum is 57.

The spelling of 18672745773 in words is "eighteen billion, six hundred seventy-two million, seven hundred forty-five thousand, seven hundred seventy-three".