21421480607 has 2 divisors, whose sum is σ = 21421480608. Its totient is φ = 21421480606.

The previous prime is 21421480477. The next prime is 21421480627. The reversal of 21421480607 is 70608412412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21421480607 - 2⁸ = 21421480351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21421480627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10710740303 + 10710740304.

It is an arithmetic number, because the mean of its divisors is an integer number (10710740304).

Almost surely, 2^21421480607 is an apocalyptic number.

21421480607 is a deficient number, since it is larger than the sum of its proper divisors (1).

21421480607 is an equidigital number, since it uses as much as digits as its factorization.

21421480607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 21421480607 in words is "twenty-one billion, four hundred twenty-one million, four hundred eighty thousand, six hundred seven".