21161002135316 has 48 divisors (see below), whose sum is σ = 38852186647680. Its totient is φ = 10070758320000.

The previous prime is 21161002135271. The next prime is 21161002135363. The reversal of 21161002135316 is 61353120016112.

It is a super-2 number, since 2×21161002135316² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 84961766 + ... + 85210466.

It is an arithmetic number, because the mean of its divisors is an integer number (809420555160).

Almost surely, 2^{21161002135316} is an apocalyptic number.

It is an amenable number.

21161002135316 is a deficient number, since it is larger than the sum of its proper divisors (17691184512364).

21161002135316 is a wasteful number, since it uses less digits than its factorization.

21161002135316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259136 (or 259134 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 21161002135316 in words is "twenty-one trillion, one hundred sixty-one billion, two million, one hundred thirty-five thousand, three hundred sixteen".