21163062116191 has 8 divisors (see below), whose sum is σ = 21167242853904. Its totient is φ = 21158881773120.

The previous prime is 21163062116173. The next prime is 21163062116197. The reversal of 21163062116191 is 19161126036112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21163062116191 - 2¹¹ = 21163062114143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21163062116197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121544691 + ... + 121718683.

It is an arithmetic number, because the mean of its divisors is an integer number (2645905356738).

Almost surely, 2^{21163062116191} is an apocalyptic number.

21163062116191 is a deficient number, since it is larger than the sum of its proper divisors (4180737713).

21163062116191 is a wasteful number, since it uses less digits than its factorization.

21163062116191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197321.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 21163062116191 in words is "twenty-one trillion, one hundred sixty-three billion, sixty-two million, one hundred sixteen thousand, one hundred ninety-one".