21853550752075 has 36 divisors (see below), whose sum is σ = 32893181241840. Its totient is φ = 14333757493440.

The previous prime is 21853550752069. The next prime is 21853550752127. The reversal of 21853550752075 is 57025705535812.

It is not a de Polignac number, because 21853550752075 - 2²³ = 21853542363467 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 387789940 + ... + 387846289.

It is an arithmetic number, because the mean of its divisors is an integer number (913699478940).

Almost surely, 2^{21853550752075} is an apocalyptic number.

21853550752075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21853550752075 is a deficient number, since it is larger than the sum of its proper divisors (11039630489765).

21853550752075 is a wasteful number, since it uses less digits than its factorization.

21853550752075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775636276 (or 775636264 counting only the distinct ones).

The product of its (nonzero) digits is 14700000, while the sum is 55.

The spelling of 21853550752075 in words is "twenty-one trillion, eight hundred fifty-three billion, five hundred fifty million, seven hundred fifty-two thousand, seventy-five".