20085173506366 has 12 divisors (see below), whose sum is σ = 31130973923616. Its totient is φ = 9718632340860.

The previous prime is 20085173506361. The next prime is 20085173506393. The reversal of 20085173506366 is 66360537158002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20085173506361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5225069230 + ... + 5225073073.

It is an arithmetic number, because the mean of its divisors is an integer number (2594247826968).

Almost surely, 2^{20085173506366} is an apocalyptic number.

20085173506366 is a deficient number, since it is larger than the sum of its proper divisors (11045800417250).

20085173506366 is a wasteful number, since it uses less digits than its factorization.

20085173506366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450142367 (or 10450142336 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 20085173506366 in words is "twenty trillion, eighty-five billion, one hundred seventy-three million, five hundred six thousand, three hundred sixty-six".