21411525607 has 2 divisors, whose sum is σ = 21411525608. Its totient is φ = 21411525606.

The previous prime is 21411525599. The next prime is 21411525613. The reversal of 21411525607 is 70652511412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21411525607 - 2³ = 21411525599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21411525647) 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, 10705762803 + 10705762804.

It is an arithmetic number, because the mean of its divisors is an integer number (10705762804).

Almost surely, 2^21411525607 is an apocalyptic number.

21411525607 is a deficient number, since it is larger than the sum of its proper divisors (1).

21411525607 is an equidigital number, since it uses as much as digits as its factorization.

21411525607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 21411525607 in words is "twenty-one billion, four hundred eleven million, five hundred twenty-five thousand, six hundred seven".