21460413503 has 2 divisors, whose sum is σ = 21460413504. Its totient is φ = 21460413502.

The previous prime is 21460413467. The next prime is 21460413547. The reversal of 21460413503 is 30531406412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21460413503 - 2¹² = 21460409407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21460413593) 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, 10730206751 + 10730206752.

It is an arithmetic number, because the mean of its divisors is an integer number (10730206752).

Almost surely, 2^21460413503 is an apocalyptic number.

21460413503 is a deficient number, since it is larger than the sum of its proper divisors (1).

21460413503 is an equidigital number, since it uses as much as digits as its factorization.

21460413503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 21460413503 its reverse (30531406412), we get a palindrome (51991819915).

The spelling of 21460413503 in words is "twenty-one billion, four hundred sixty million, four hundred thirteen thousand, five hundred three".