21036153599 has 2 divisors, whose sum is σ = 21036153600. Its totient is φ = 21036153598.

The previous prime is 21036153557. The next prime is 21036153629. The reversal of 21036153599 is 99535163012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21036153599 - 2⁸ = 21036153343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21036153529) 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, 10518076799 + 10518076800.

It is an arithmetic number, because the mean of its divisors is an integer number (10518076800).

Almost surely, 2^21036153599 is an apocalyptic number.

21036153599 is a deficient number, since it is larger than the sum of its proper divisors (1).

21036153599 is an equidigital number, since it uses as much as digits as its factorization.

21036153599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 218700, while the sum is 44.

The spelling of 21036153599 in words is "twenty-one billion, thirty-six million, one hundred fifty-three thousand, five hundred ninety-nine".