21330051431363 has 2 divisors, whose sum is σ = 21330051431364. Its totient is φ = 21330051431362.

The previous prime is 21330051431287. The next prime is 21330051431369. The reversal of 21330051431363 is 36313415003312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21330051431363 - 2⁴⁰ = 20230539803587 is a prime.

It is not a weakly prime, because it can be changed into another prime (21330051431369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665025715681 + 10665025715682.

It is an arithmetic number, because the mean of its divisors is an integer number (10665025715682).

Almost surely, 2^{21330051431363} is an apocalyptic number.

21330051431363 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330051431363 is an equidigital number, since it uses as much as digits as its factorization.

21330051431363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 35.

Adding to 21330051431363 its reverse (36313415003312), we get a palindrome (57643466434675).

The spelling of 21330051431363 in words is "twenty-one trillion, three hundred thirty billion, fifty-one million, four hundred thirty-one thousand, three hundred sixty-three".