21414186371 has 2 divisors, whose sum is σ = 21414186372. Its totient is φ = 21414186370.

The previous prime is 21414186331. The next prime is 21414186401. The reversal of 21414186371 is 17368141412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21414186371 is a prime.

It is not a weakly prime, because it can be changed into another prime (21414186331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707093185 + 10707093186.

It is an arithmetic number, because the mean of its divisors is an integer number (10707093186).

Almost surely, 2^21414186371 is an apocalyptic number.

21414186371 is a deficient number, since it is larger than the sum of its proper divisors (1).

21414186371 is an equidigital number, since it uses as much as digits as its factorization.

21414186371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The spelling of 21414186371 in words is "twenty-one billion, four hundred fourteen million, one hundred eighty-six thousand, three hundred seventy-one".