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63879141768 = 23313414993679
BaseRepresentation
bin111011011111011111…
…100101100110001000
320002212211212121212120
4323133133211212020
52021311030014033
645202355411240
74420661513631
oct733737454610
9202784777776
1063879141768
1125100123752
1210468bb3b20
136040314150
14313db46888
1519dd0a31b3
hexedf7e5988

63879141768 has 64 divisors (see below), whose sum is σ = 176177030400. Its totient is φ = 19175723520.

The previous prime is 63879141761. The next prime is 63879141773. The reversal of 63879141768 is 86714197836.

It is not an unprimeable number, because it can be changed into a prime (63879141761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2484048 + ... + 2509631.

It is an arithmetic number, because the mean of its divisors is an integer number (2752766100).

Almost surely, 263879141768 is an apocalyptic number.

It is an amenable number.

63879141768 is an abundant number, since it is smaller than the sum of its proper divisors (112297888632).

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

63879141768 is a wasteful number, since it uses less digits than its factorization.

63879141768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993742 (or 4993738 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 60.

The spelling of 63879141768 in words is "sixty-three billion, eight hundred seventy-nine million, one hundred forty-one thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 41 52 78 82 104 123 156 164 246 312 328 492 533 984 1066 1599 2132 3198 4264 6396 12792 4993679 9987358 14981037 19974716 29962074 39949432 59924148 64917827 119848296 129835654 194753481 204740839 259671308 389506962 409481678 519342616 614222517 779013924 818963356 1228445034 1558027848 1637926712 2456890068 2661630907 4913780136 5323261814 7984892721 10646523628 15969785442 21293047256 31939570884 63879141768