18807323320451 has 16 divisors (see below), whose sum is σ = 19845754521600. Its totient is φ = 17773799593248.

The previous prime is 18807323320441. The next prime is 18807323320529. The reversal of 18807323320451 is 15402332370881.

It is a cyclic number.

It is not a de Polignac number, because 18807323320451 - 2³⁴ = 18790143451267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18807323320396 and 18807323320405.

It is not an unprimeable number, because it can be changed into a prime (18807323320441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12789140 + ... + 14183678.

It is an arithmetic number, because the mean of its divisors is an integer number (1240359657600).

Almost surely, 2^{18807323320451} is an apocalyptic number.

18807323320451 is a deficient number, since it is larger than the sum of its proper divisors (1038431201149).

18807323320451 is a wasteful number, since it uses less digits than its factorization.

18807323320451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396298.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 18807323320451 in words is "eighteen trillion, eight hundred seven billion, three hundred twenty-three million, three hundred twenty thousand, four hundred fifty-one".