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68498707776 = 263356764103
BaseRepresentation
bin111111110010110101…
…110101010101000000
320112210210101220002220
4333302311311111000
52110241132122101
651245021011040
74643314260252
oct776265652500
9215723356086
1068498707776
1127060809aa4
12113380b3a80
1365c83c2165
14345b497cd2
151bad90d636
hexff2d75540

68498707776 has 28 divisors (see below), whose sum is σ = 181236164832. Its totient is φ = 22832902528.

The previous prime is 68498707763. The next prime is 68498707777. The reversal of 68498707776 is 67770789486.

It is a self number, because there is not a number n which added to its sum of digits gives 68498707776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68498707777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178381860 + ... + 178382243.

Almost surely, 268498707776 is an apocalyptic number.

It is an amenable number.

68498707776 is an abundant number, since it is smaller than the sum of its proper divisors (112737457056).

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

68498707776 is a wasteful number, since it uses less digits than its factorization.

68498707776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356764118 (or 356764108 counting only the distinct ones).

The product of its (nonzero) digits is 199148544, while the sum is 69.

The spelling of 68498707776 in words is "sixty-eight billion, four hundred ninety-eight million, seven hundred seven thousand, seven hundred seventy-six".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 192 356764103 713528206 1070292309 1427056412 2140584618 2854112824 4281169236 5708225648 8562338472 11416451296 17124676944 22832902592 34249353888 68498707776