Search a number
-
+
68468385412 = 227425128403
BaseRepresentation
bin111111110001000010…
…001010011010000100
320112201200100100122101
4333301002022122010
52110210401313122
651242015041444
74642465450000
oct776102123204
9215650310571
1068468385412
1127045689399
1211329b10284
1365c203652b
143457443700
151baae1e027
hexff108a684

68468385412 has 60 divisors (see below), whose sum is σ = 140343141456. Its totient is φ = 29225658000.

The previous prime is 68468385409. The next prime is 68468385413. The reversal of 68468385412 is 21458386486.

It is not an unprimeable number, because it can be changed into a prime (68468385413) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2396403 + ... + 2424805.

Almost surely, 268468385412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68468385412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70171570728).

68468385412 is an abundant number, since it is smaller than the sum of its proper divisors (71874756044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68468385412 is a wasteful number, since it uses less digits than its factorization.

68468385412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28686 (or 28663 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 55.

The spelling of 68468385412 in words is "sixty-eight billion, four hundred sixty-eight million, three hundred eighty-five thousand, four hundred twelve".

Divisors: 1 2 4 7 14 28 49 98 196 251 343 502 686 1004 1372 1757 2401 3514 4802 7028 9604 12299 24598 28403 49196 56806 86093 113612 172186 198821 344372 397642 602651 795284 1205302 1391747 2410604 2783494 5566988 7129153 9742229 14258306 19484458 28516612 38968916 49904071 68195603 99808142 136391206 199616284 272782412 349328497 698656994 1397313988 2445299479 4890598958 9781197916 17117096353 34234192706 68468385412