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68331821282 = 2271690718253
BaseRepresentation
bin111111101000111001…
…001101100011100010
320112101011101011212122
4333220321031203202
52104420421240112
651220300024242
74636216616564
oct775071154342
9215334334778
1068331821282
1126a8559377a
12112b0232082
13659c96005a
143443255334
151b9de45872
hexfe8e4d8e2

68331821282 has 16 divisors (see below), whose sum is σ = 102896483712. Its totient is φ = 34033044240.

The previous prime is 68331821263. The next prime is 68331821309. The reversal of 68331821282 is 28212813386.

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, 3734468 + ... + 3752720.

It is an arithmetic number, because the mean of its divisors is an integer number (6431030232).

Almost surely, 268331821282 is an apocalyptic number.

68331821282 is a deficient number, since it is larger than the sum of its proper divisors (34564662430).

68331821282 is a wasteful number, since it uses less digits than its factorization.

68331821282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25433.

The product of its digits is 221184, while the sum is 44.

The spelling of 68331821282 in words is "sixty-eight billion, three hundred thirty-one million, eight hundred twenty-one thousand, two hundred eighty-two".

Divisors: 1 2 271 542 6907 13814 18253 36506 1871797 3743594 4946563 9893126 126073471 252146942 34165910641 68331821282