18721472751307 has 2 divisors, whose sum is σ = 18721472751308. Its totient is φ = 18721472751306.

The previous prime is 18721472751209. The next prime is 18721472751347. The reversal of 18721472751307 is 70315727412781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18721472751307 - 2¹⁹ = 18721472227019 is a prime.

It is not a weakly prime, because it can be changed into another prime (18721472751347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9360736375653 + 9360736375654.

It is an arithmetic number, because the mean of its divisors is an integer number (9360736375654).

Almost surely, 2^{18721472751307} is an apocalyptic number.

18721472751307 is a deficient number, since it is larger than the sum of its proper divisors (1).

18721472751307 is an equidigital number, since it uses as much as digits as its factorization.

18721472751307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4609920, while the sum is 55.

The spelling of 18721472751307 in words is "eighteen trillion, seven hundred twenty-one billion, four hundred seventy-two million, seven hundred fifty-one thousand, three hundred seven".