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68008128250 = 253607448159
BaseRepresentation
bin111111010101100110…
…011010111011111010
320111112121021212111211
4333111212122323322
52103240040101000
651124214113334
74625206360246
oct772546327372
9214477255454
1068008128250
11269298a7377
121121b94b84a
13654a887c0a
143412275426
151b808067ba
hexfd599aefa

68008128250 has 32 divisors (see below), whose sum is σ = 127521239040. Its totient is φ = 27158374800.

The previous prime is 68008128247. The next prime is 68008128263. The reversal of 68008128250 is 5282180086.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72330 + ... + 375829.

It is an arithmetic number, because the mean of its divisors is an integer number (3985038720).

Almost surely, 268008128250 is an apocalyptic number.

68008128250 is a deficient number, since it is larger than the sum of its proper divisors (59513110790).

68008128250 is a wasteful number, since it uses less digits than its factorization.

68008128250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448783 (or 448773 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 68008128250 in words is "sixty-eight billion, eight million, one hundred twenty-eight thousand, two hundred fifty".

Divisors: 1 2 5 10 25 50 125 250 607 1214 3035 6070 15175 30350 75875 151750 448159 896318 2240795 4481590 11203975 22407950 56019875 112039750 272032513 544065026 1360162565 2720325130 6800812825 13601625650 34004064125 68008128250