268168932549 has 128 divisors (see below), whose sum is σ = 470644162560. Its totient is φ = 147761107200.

The previous prime is 268168932539. The next prime is 268168932557. The reversal of 268168932549 is 945239861862.

268168932549 is a `hidden beast` number, since 2 + 6 + 8 + 1 + 6 + 89 + 3 + 2 + 549 = 666.

268168932549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 268168932549 - 2⁸ = 268168932293 is a prime.

It is a super-2 number, since 2×268168932549² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268168932509) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 161255292 + ... + 161256954.

It is an arithmetic number, because the mean of its divisors is an integer number (3676907520).

Almost surely, 2^268168932549 is an apocalyptic number.

It is an amenable number.

268168932549 is a deficient number, since it is larger than the sum of its proper divisors (202475230011).

268168932549 is a wasteful number, since it uses less digits than its factorization.

268168932549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008 (or 2002 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 268168932549 in words is "two hundred sixty-eight billion, one hundred sixty-eight million, nine hundred thirty-two thousand, five hundred forty-nine".