68637933189 has 24 divisors (see below), whose sum is σ = 113333700480. Its totient is φ = 39212455968.

The previous prime is 68637933131. The next prime is 68637933191. The reversal of 68637933189 is 98133973686.

68637933189 is a `hidden beast` number, since 6 + 86 + 379 + 3 + 3 + 189 = 666.

It is not a de Polignac number, because 68637933189 - 2¹³ = 68637924997 is a prime.

It is a super-2 number, since 2×68637933189² (a number of 22 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 (68637933289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146707 + ... + 398495.

It is an arithmetic number, because the mean of its divisors is an integer number (4722237520).

Almost surely, 2^68637933189 is an apocalyptic number.

It is an amenable number.

68637933189 is a deficient number, since it is larger than the sum of its proper divisors (44695767291).

68637933189 is a wasteful number, since it uses less digits than its factorization.

68637933189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256129 (or 256126 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The spelling of 68637933189 in words is "sixty-eight billion, six hundred thirty-seven million, nine hundred thirty-three thousand, one hundred eighty-nine".