21616036402435 has 16 divisors (see below), whose sum is σ = 26143803972000. Its totient is φ = 17156726454016.

The previous prime is 21616036402421. The next prime is 21616036402469. The reversal of 21616036402435 is 53420463061612.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21616036402435 - 2⁵ = 21616036402403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21616036402391 and 21616036402400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16289665 + ... + 17566594.

It is an arithmetic number, because the mean of its divisors is an integer number (1633987748250).

Almost surely, 2^{21616036402435} is an apocalyptic number.

21616036402435 is a deficient number, since it is larger than the sum of its proper divisors (4527767569565).

21616036402435 is a wasteful number, since it uses less digits than its factorization.

21616036402435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33857270.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 21616036402435 in words is "twenty-one trillion, six hundred sixteen billion, thirty-six million, four hundred two thousand, four hundred thirty-five".