21853730861174 has 64 divisors (see below), whose sum is σ = 33968484000000. Its totient is φ = 10540018384896.

The previous prime is 21853730861159. The next prime is 21853730861243. The reversal of 21853730861174 is 47116803735812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 938037494 + ... + 938060790.

It is an arithmetic number, because the mean of its divisors is an integer number (530757562500).

Almost surely, 2^{21853730861174} is an apocalyptic number.

21853730861174 is a deficient number, since it is larger than the sum of its proper divisors (12114753138826).

21853730861174 is a wasteful number, since it uses less digits than its factorization.

21853730861174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24125.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 21853730861174 in words is "twenty-one trillion, eight hundred fifty-three billion, seven hundred thirty million, eight hundred sixty-one thousand, one hundred seventy-four".