168944185053 has 32 divisors (see below), whose sum is σ = 286062393600. Its totient is φ = 96533011008.

The previous prime is 168944184991. The next prime is 168944185087. The reversal of 168944185053 is 350581449861.

It is a happy number.

168944185053 is a `hidden beast` number, since 1 + 6 + 8 + 94 + 41 + 8 + 505 + 3 = 666.

It is not a de Polignac number, because 168944185053 - 2¹⁸ = 168943922909 is a prime.

It is a super-2 number, since 2×168944185053² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168944185853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4884103 + ... + 4918571.

It is an arithmetic number, because the mean of its divisors is an integer number (8939449800).

Almost surely, 2^168944185053 is an apocalyptic number.

It is an amenable number.

168944185053 is a deficient number, since it is larger than the sum of its proper divisors (117118208547).

168944185053 is a wasteful number, since it uses less digits than its factorization.

168944185053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60418 (or 60412 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 168944185053 in words is "one hundred sixty-eight billion, nine hundred forty-four million, one hundred eighty-five thousand, fifty-three".