21616035433611 has 16 divisors (see below), whose sum is σ = 28976102369280. Its totient is φ = 14333500359680.

The previous prime is 21616035433549. The next prime is 21616035433679. The reversal of 21616035433611 is 11633453061612.

It is a cyclic number.

It is not a de Polignac number, because 21616035433611 - 2³¹ = 21613887949963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21616035437611) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20864571 + ... + 21876068.

It is an arithmetic number, because the mean of its divisors is an integer number (1811006398080).

Almost surely, 2^{21616035433611} is an apocalyptic number.

21616035433611 is a deficient number, since it is larger than the sum of its proper divisors (7360066935669).

21616035433611 is a wasteful number, since it uses less digits than its factorization.

21616035433611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42741546.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 21616035433611 in words is "twenty-one trillion, six hundred sixteen billion, thirty-five million, four hundred thirty-three thousand, six hundred eleven".