21336006434635 has 32 divisors (see below), whose sum is σ = 27376587763200. Its totient is φ = 15927534766080.

The previous prime is 21336006434549. The next prime is 21336006434641. The reversal of 21336006434635 is 53643460063312.

It is not a de Polignac number, because 21336006434635 - 2¹⁵ = 21336006401867 is a prime.

It is a super-2 number, since 2×21336006434635² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267571 + ... + 6537859.

It is an arithmetic number, because the mean of its divisors is an integer number (855518367600).

Almost surely, 2^{21336006434635} is an apocalyptic number.

21336006434635 is a deficient number, since it is larger than the sum of its proper divisors (6040581328565).

21336006434635 is a wasteful number, since it uses less digits than its factorization.

21336006434635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271111.

The product of its (nonzero) digits is 2799360, while the sum is 46.

Adding to 21336006434635 its reverse (53643460063312), we get a palindrome (74979466497947).

The spelling of 21336006434635 in words is "twenty-one trillion, three hundred thirty-six billion, six million, four hundred thirty-four thousand, six hundred thirty-five".