18768345140427 has 16 divisors (see below), whose sum is σ = 25456579464960. Its totient is φ = 12296303386400.

The previous prime is 18768345140393. The next prime is 18768345140483. The reversal of 18768345140427 is 72404154386781.

It is a cyclic number.

It is not a de Polignac number, because 18768345140427 - 2⁷ = 18768345140299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18768345130427) 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, 16050024 + ... + 17179637.

It is an arithmetic number, because the mean of its divisors is an integer number (1591036216560).

Almost surely, 2^{18768345140427} is an apocalyptic number.

18768345140427 is a deficient number, since it is larger than the sum of its proper divisors (6688234324533).

18768345140427 is a wasteful number, since it uses less digits than its factorization.

18768345140427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33232914.

The product of its (nonzero) digits is 36126720, while the sum is 60.

The spelling of 18768345140427 in words is "eighteen trillion, seven hundred sixty-eight billion, three hundred forty-five million, one hundred forty thousand, four hundred twenty-seven".