18671153346127 has 2 divisors, whose sum is σ = 18671153346128. Its totient is φ = 18671153346126.

The previous prime is 18671153346089. The next prime is 18671153346193. The reversal of 18671153346127 is 72164335117681.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18671153346127 is a prime.

It is a super-2 number, since 2×18671153346127² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18671153344127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9335576673063 + 9335576673064.

It is an arithmetic number, because the mean of its divisors is an integer number (9335576673064).

Almost surely, 2^{18671153346127} is an apocalyptic number.

18671153346127 is a deficient number, since it is larger than the sum of its proper divisors (1).

18671153346127 is an equidigital number, since it uses as much as digits as its factorization.

18671153346127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 55.

The spelling of 18671153346127 in words is "eighteen trillion, six hundred seventy-one billion, one hundred fifty-three million, three hundred forty-six thousand, one hundred twenty-seven".