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68400006010 = 2572431323879
BaseRepresentation
bin111111101100111101…
…010100001101111010
320112112220200022201221
4333230331110031322
52110040400143020
651231133302254
74641005313100
oct775475241572
9215486608657
1068400006010
1127010024996
121130b03498a
1365b0b1454b
14344c323c70
151ba4e136aa
hexfecf5437a

68400006010 has 48 divisors (see below), whose sum is σ = 143553980160. Its totient is φ = 23396946720.

The previous prime is 68400005941. The next prime is 68400006011. The reversal of 68400006010 is 1060000486.

It is a super-3 number, since 3×684000060103 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (68400006011) 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, 49251 + ... + 373129.

It is an arithmetic number, because the mean of its divisors is an integer number (2990707920).

Almost surely, 268400006010 is an apocalyptic number.

68400006010 is an abundant number, since it is smaller than the sum of its proper divisors (75153974150).

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

68400006010 is a wasteful number, since it uses less digits than its factorization.

68400006010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324331 (or 324324 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 68400006010 its reverse (1060000486), we get a palindrome (69460006496).

The spelling of 68400006010 in words is "sixty-eight billion, four hundred million, six thousand, ten".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 431 490 862 2155 3017 4310 6034 15085 21119 30170 42238 105595 211190 323879 647758 1619395 2267153 3238790 4534306 11335765 15870071 22671530 31740142 79350355 139591849 158700710 279183698 697959245 977142943 1395918490 1954285886 4885714715 6840000601 9771429430 13680001202 34200003005 68400006010