Search a number
-
+
68660026153 = 1915671230597
BaseRepresentation
bin111111111100011101…
…001101101100101001
320120020000221201022121
4333330131031230221
52111103431314103
651313022351241
74650313410235
oct777435155451
9216200851277
1068660026153
1127133881974
121138212b521
136622954a14
143474a8b5c5
151bbcb766bd
hexffc74db29

68660026153 has 8 divisors (see below), whose sum is σ = 72278637120. Its totient is φ = 65041907760.

The previous prime is 68660026151. The next prime is 68660026157. The reversal of 68660026153 is 35162006686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68660026153 - 21 = 68660026151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68660026151) 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 7 ways as a sum of consecutive naturals, for example, 182451 + ... + 413047.

It is an arithmetic number, because the mean of its divisors is an integer number (9034829640).

Almost surely, 268660026153 is an apocalyptic number.

It is an amenable number.

68660026153 is a deficient number, since it is larger than the sum of its proper divisors (3618610967).

68660026153 is a wasteful number, since it uses less digits than its factorization.

68660026153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246287.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 68660026153 in words is "sixty-eight billion, six hundred sixty million, twenty-six thousand, one hundred fifty-three".

Divisors: 1 19 15671 230597 297749 4381343 3613685587 68660026153