21161036894583 has 16 divisors (see below), whose sum is σ = 28368781056000. Its totient is φ = 14030386745760.

The previous prime is 21161036894539. The next prime is 21161036894603. The reversal of 21161036894583 is 38549863016112.

It is not a de Polignac number, because 21161036894583 - 2¹⁷ = 21161036763511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21161036884583) 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, 6297063 + ... + 9054008.

It is an arithmetic number, because the mean of its divisors is an integer number (1773048816000).

Almost surely, 2^{21161036894583} is an apocalyptic number.

21161036894583 is a deficient number, since it is larger than the sum of its proper divisors (7207744161417).

21161036894583 is a wasteful number, since it uses less digits than its factorization.

21161036894583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15353582.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 21161036894583 in words is "twenty-one trillion, one hundred sixty-one billion, thirty-six million, eight hundred ninety-four thousand, five hundred eighty-three".