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67883385856 = 21011134310781
BaseRepresentation
bin111111001110001010…
…100100010000000000
320111012220120022010011
4333032022210100000
52103011121321411
651104000314304
74622133154636
oct771612442000
9214186508104
1067883385856
1126875446590
12111a6012994
13652aa90550
1433dd883356
151b748b5c21
hexfce2a4400

67883385856 has 176 divisors, whose sum is σ = 163147013568. Its totient is φ = 27817574400.

The previous prime is 67883385793. The next prime is 67883385887. The reversal of 67883385856 is 65858338876.

It is a tau number, because it is divible by the number of its divisors (176).

It is a junction number, because it is equal to n+sod(n) for n = 67883385791 and 67883385800.

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, 6291186 + ... + 6301966.

It is an arithmetic number, because the mean of its divisors is an integer number (926971668).

Almost surely, 267883385856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67883385856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81573506784).

67883385856 is an abundant number, since it is smaller than the sum of its proper divisors (95263627712).

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

67883385856 is a wasteful number, since it uses less digits than its factorization.

67883385856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10868 (or 10850 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 67.

The spelling of 67883385856 in words is "sixty-seven billion, eight hundred eighty-three million, three hundred eighty-five thousand, eight hundred fifty-six".