21462307753 has 2 divisors, whose sum is σ = 21462307754. Its totient is φ = 21462307752.

The previous prime is 21462307739. The next prime is 21462307777. The reversal of 21462307753 is 35770326412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16752642624 + 4709665129 = 129432^2 + 68627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21462307753 is a prime.

It is not a weakly prime, because it can be changed into another prime (21462307703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10731153876 + 10731153877.

It is an arithmetic number, because the mean of its divisors is an integer number (10731153877).

Almost surely, 2^21462307753 is an apocalyptic number.

It is an amenable number.

21462307753 is a deficient number, since it is larger than the sum of its proper divisors (1).

21462307753 is an equidigital number, since it uses as much as digits as its factorization.

21462307753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 40.

The spelling of 21462307753 in words is "twenty-one billion, four hundred sixty-two million, three hundred seven thousand, seven hundred fifty-three".