27421378182487 has 2 divisors, whose sum is σ = 27421378182488. Its totient is φ = 27421378182486.

The previous prime is 27421378182479. The next prime is 27421378182491. The reversal of 27421378182487 is 78428187312472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27421378182487 - 2³ = 27421378182479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27421378186487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13710689091243 + 13710689091244.

It is an arithmetic number, because the mean of its divisors is an integer number (13710689091244).

Almost surely, 2^{27421378182487} is an apocalyptic number.

27421378182487 is a deficient number, since it is larger than the sum of its proper divisors (1).

27421378182487 is an equidigital number, since it uses as much as digits as its factorization.

27421378182487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67436544, while the sum is 64.

The spelling of 27421378182487 in words is "twenty-seven trillion, four hundred twenty-one billion, three hundred seventy-eight million, one hundred eighty-two thousand, four hundred eighty-seven".