21160510506635 has 16 divisors (see below), whose sum is σ = 26888578762176. Its totient is φ = 15931266751488.

The previous prime is 21160510506613. The next prime is 21160510506673. The reversal of 21160510506635 is 53660501506112.

It is a cyclic number.

It is not a de Polignac number, because 21160510506635 - 2²⁶ = 21160443397771 is a prime.

It is a super-3 number, since 3×21160510506635³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21160510506592 and 21160510506601.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 9562274 + ... + 11565383.

It is an arithmetic number, because the mean of its divisors is an integer number (1680536172636).

Almost surely, 2^{21160510506635} is an apocalyptic number.

21160510506635 is a deficient number, since it is larger than the sum of its proper divisors (5728068255541).

21160510506635 is a wasteful number, since it uses less digits than its factorization.

21160510506635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21139462.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 21160510506635 in words is "twenty-one trillion, one hundred sixty billion, five hundred ten million, five hundred six thousand, six hundred thirty-five".