21432455321311 has 2 divisors, whose sum is σ = 21432455321312. Its totient is φ = 21432455321310.

The previous prime is 21432455321293. The next prime is 21432455321353. The reversal of 21432455321311 is 11312355423412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21432455321311 - 2²⁵ = 21432421766879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21432455921311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10716227660655 + 10716227660656.

It is an arithmetic number, because the mean of its divisors is an integer number (10716227660656).

Almost surely, 2^{21432455321311} is an apocalyptic number.

21432455321311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21432455321311 is an equidigital number, since it uses as much as digits as its factorization.

21432455321311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The spelling of 21432455321311 in words is "twenty-one trillion, four hundred thirty-two billion, four hundred fifty-five million, three hundred twenty-one thousand, three hundred eleven".