21462755329 has 2 divisors, whose sum is σ = 21462755330. Its totient is φ = 21462755328.

The previous prime is 21462755297. The next prime is 21462755339. The reversal of 21462755329 is 92355726412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19782985104 + 1679770225 = 140652^2 + 40985^2 .

It is a cyclic number.

It is not a de Polignac number, because 21462755329 - 2⁵ = 21462755297 is a prime.

It is not a weakly prime, because it can be changed into another prime (21462755339) 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, 10731377664 + 10731377665.

It is an arithmetic number, because the mean of its divisors is an integer number (10731377665).

Almost surely, 2^21462755329 is an apocalyptic number.

It is an amenable number.

21462755329 is a deficient number, since it is larger than the sum of its proper divisors (1).

21462755329 is an equidigital number, since it uses as much as digits as its factorization.

21462755329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 46.

The spelling of 21462755329 in words is "twenty-one billion, four hundred sixty-two million, seven hundred fifty-five thousand, three hundred twenty-nine".