21234132463 has 2 divisors, whose sum is σ = 21234132464. Its totient is φ = 21234132462.

The previous prime is 21234132433. The next prime is 21234132487. The reversal of 21234132463 is 36423143212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21234132463 - 2⁵ = 21234132431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21234132433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10617066231 + 10617066232.

It is an arithmetic number, because the mean of its divisors is an integer number (10617066232).

Almost surely, 2^21234132463 is an apocalyptic number.

21234132463 is a deficient number, since it is larger than the sum of its proper divisors (1).

21234132463 is an equidigital number, since it uses as much as digits as its factorization.

21234132463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

Adding to 21234132463 its reverse (36423143212), we get a palindrome (57657275675).

The spelling of 21234132463 in words is "twenty-one billion, two hundred thirty-four million, one hundred thirty-two thousand, four hundred sixty-three".