21451414003 has 2 divisors, whose sum is σ = 21451414004. Its totient is φ = 21451414002.

The previous prime is 21451413989. The next prime is 21451414031. The reversal of 21451414003 is 30041415412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21451414003 - 2²¹ = 21449316851 is a prime.

It is not a weakly prime, because it can be changed into another prime (21451414043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10725707001 + 10725707002.

It is an arithmetic number, because the mean of its divisors is an integer number (10725707002).

Almost surely, 2^21451414003 is an apocalyptic number.

21451414003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21451414003 is an equidigital number, since it uses as much as digits as its factorization.

21451414003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 21451414003 its reverse (30041415412), we get a palindrome (51492829415).

The spelling of 21451414003 in words is "twenty-one billion, four hundred fifty-one million, four hundred fourteen thousand, three".