17427856087 has 2 divisors, whose sum is σ = 17427856088. Its totient is φ = 17427856086.

The previous prime is 17427856057. The next prime is 17427856093. The reversal of 17427856087 is 78065872471.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17427856087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17427856057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8713928043 + 8713928044.

It is an arithmetic number, because the mean of its divisors is an integer number (8713928044).

Almost surely, 2^17427856087 is an apocalyptic number.

17427856087 is a deficient number, since it is larger than the sum of its proper divisors (1).

17427856087 is an equidigital number, since it uses as much as digits as its factorization.

17427856087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5268480, while the sum is 55.

The spelling of 17427856087 in words is "seventeen billion, four hundred twenty-seven million, eight hundred fifty-six thousand, eighty-seven".