18072673971 has 8 divisors (see below), whose sum is σ = 26287525824. Its totient is φ = 10953135720.

The previous prime is 18072673921. The next prime is 18072673979. The reversal of 18072673971 is 17937627081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18072673971 - 2⁶ = 18072673907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18072673979) 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 in 7 ways as a sum of consecutive naturals, for example, 273828361 + ... + 273828426.

It is an arithmetic number, because the mean of its divisors is an integer number (3285940728).

Almost surely, 2^18072673971 is an apocalyptic number.

18072673971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18072673971 is a deficient number, since it is larger than the sum of its proper divisors (8214851853).

18072673971 is a wasteful number, since it uses less digits than its factorization.

18072673971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547656801.

The product of its (nonzero) digits is 889056, while the sum is 51.

The spelling of 18072673971 in words is "eighteen billion, seventy-two million, six hundred seventy-three thousand, nine hundred seventy-one".