21500164161133 has 16 divisors (see below), whose sum is σ = 24759742170240. Its totient is φ = 18287623972800.

The previous prime is 21500164161107. The next prime is 21500164161139. The reversal of 21500164161133 is 33116146100512.

It is not a de Polignac number, because 21500164161133 - 2⁹ = 21500164160621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21500164161139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44757363 + ... + 45235183.

It is an arithmetic number, because the mean of its divisors is an integer number (1547483885640).

Almost surely, 2^{21500164161133} is an apocalyptic number.

It is an amenable number.

21500164161133 is a deficient number, since it is larger than the sum of its proper divisors (3259578009107).

21500164161133 is a wasteful number, since it uses less digits than its factorization.

21500164161133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527028.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 21500164161133 in words is "twenty-one trillion, five hundred billion, one hundred sixty-four million, one hundred sixty-one thousand, one hundred thirty-three".