21411432319 has 2 divisors, whose sum is σ = 21411432320. Its totient is φ = 21411432318.

The previous prime is 21411432281. The next prime is 21411432353. The reversal of 21411432319 is 91323411412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21411432319 is a prime.

It is a super-2 number, since 2×21411432319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21411432379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10705716159 + 10705716160.

It is an arithmetic number, because the mean of its divisors is an integer number (10705716160).

Almost surely, 2^21411432319 is an apocalyptic number.

21411432319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21411432319 is an equidigital number, since it uses as much as digits as its factorization.

21411432319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The spelling of 21411432319 in words is "twenty-one billion, four hundred eleven million, four hundred thirty-two thousand, three hundred nineteen".