18055506527 has 2 divisors, whose sum is σ = 18055506528. Its totient is φ = 18055506526.

The previous prime is 18055506479. The next prime is 18055506559. The reversal of 18055506527 is 72560555081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18055506527 - 2¹² = 18055502431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18055506587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9027753263 + 9027753264.

It is an arithmetic number, because the mean of its divisors is an integer number (9027753264).

Almost surely, 2^18055506527 is an apocalyptic number.

18055506527 is a deficient number, since it is larger than the sum of its proper divisors (1).

18055506527 is an equidigital number, since it uses as much as digits as its factorization.

18055506527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420000, while the sum is 44.

The spelling of 18055506527 in words is "eighteen billion, fifty-five million, five hundred six thousand, five hundred twenty-seven".