21014432419 has 2 divisors, whose sum is σ = 21014432420. Its totient is φ = 21014432418.

The previous prime is 21014432399. The next prime is 21014432441. The reversal of 21014432419 is 91423441012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21014432419 - 2⁷ = 21014432291 is a prime.

It is a super-2 number, since 2×21014432419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21014435419) 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, 10507216209 + 10507216210.

It is an arithmetic number, because the mean of its divisors is an integer number (10507216210).

Almost surely, 2^21014432419 is an apocalyptic number.

21014432419 is a deficient number, since it is larger than the sum of its proper divisors (1).

21014432419 is an equidigital number, since it uses as much as digits as its factorization.

21014432419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 21014432419 in words is "twenty-one billion, fourteen million, four hundred thirty-two thousand, four hundred nineteen".