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68880888996 = 22313941295497
BaseRepresentation
bin100000000100110011…
…1101111010010100100
320120210102112201011220
41000021213233102210
52112032001421441
651350552300340
74655634616233
oct1001147572244
9216712481156
1068880888996
1127237514447
12114240a16b0
1366596350aa
143496140b1a
151bd2252466
hex10099ef4a4

68880888996 has 24 divisors (see below), whose sum is σ = 161878352160. Its totient is φ = 22795113792.

The previous prime is 68880888959. The next prime is 68880889027. The reversal of 68880888996 is 69988808886.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20646081 + ... + 20649416.

It is an arithmetic number, because the mean of its divisors is an integer number (6744931340).

Almost surely, 268880888996 is an apocalyptic number.

It is an amenable number.

68880888996 is an abundant number, since it is smaller than the sum of its proper divisors (92997463164).

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

68880888996 is a wasteful number, since it uses less digits than its factorization.

68880888996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41295643 (or 41295641 counting only the distinct ones).

The product of its (nonzero) digits is 764411904, while the sum is 78.

The spelling of 68880888996 in words is "sixty-eight billion, eight hundred eighty million, eight hundred eighty-eight thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 12 139 278 417 556 834 1668 41295497 82590994 123886491 165181988 247772982 495545964 5740074083 11480148166 17220222249 22960296332 34440444498 68880888996