21400414307 has 2 divisors, whose sum is σ = 21400414308. Its totient is φ = 21400414306.

The previous prime is 21400414289. The next prime is 21400414313. The reversal of 21400414307 is 70341400412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21400414307 - 2⁸ = 21400414051 is a prime.

It is a super-2 number, since 2×21400414307² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21400414327) 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, 10700207153 + 10700207154.

It is an arithmetic number, because the mean of its divisors is an integer number (10700207154).

Almost surely, 2^21400414307 is an apocalyptic number.

21400414307 is a deficient number, since it is larger than the sum of its proper divisors (1).

21400414307 is an equidigital number, since it uses as much as digits as its factorization.

21400414307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 21400414307 its reverse (70341400412), we get a palindrome (91741814719).

The spelling of 21400414307 in words is "twenty-one billion, four hundred million, four hundred fourteen thousand, three hundred seven".