21536882035 has 4 divisors (see below), whose sum is σ = 25844258448. Its totient is φ = 17229505624.

The previous prime is 21536882023. The next prime is 21536882053. The reversal of 21536882035 is 53028863512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21536882035 - 2¹⁵ = 21536849267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21536881982 and 21536882000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2153688199 + ... + 2153688208.

It is an arithmetic number, because the mean of its divisors is an integer number (6461064612).

Almost surely, 2^21536882035 is an apocalyptic number.

21536882035 is a deficient number, since it is larger than the sum of its proper divisors (4307376413).

21536882035 is an equidigital number, since it uses as much as digits as its factorization.

21536882035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4307376412.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 21536882035 in words is "twenty-one billion, five hundred thirty-six million, eight hundred eighty-two thousand, thirty-five".