18278080127 has 2 divisors, whose sum is σ = 18278080128. Its totient is φ = 18278080126.

The previous prime is 18278080109. The next prime is 18278080129. The reversal of 18278080127 is 72108087281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18278080127 - 2⁶ = 18278080063 is a prime.

It is a super-2 number, since 2×18278080127² (a number of 21 digits) contains 22 as substring.

Together with 18278080129, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18278080129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9139040063 + 9139040064.

It is an arithmetic number, because the mean of its divisors is an integer number (9139040064).

Almost surely, 2^18278080127 is an apocalyptic number.

18278080127 is a deficient number, since it is larger than the sum of its proper divisors (1).

18278080127 is an equidigital number, since it uses as much as digits as its factorization.

18278080127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 44.

The spelling of 18278080127 in words is "eighteen billion, two hundred seventy-eight million, eighty thousand, one hundred twenty-seven".