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67380078680 = 2351799088351
BaseRepresentation
bin111110110000001010…
…100110100001011000
320102220211111122110122
4332300022212201120
52100443300004210
650542020532412
74603512135035
oct766012464130
9212824448418
1067380078680
1126637330442
1211085551108
13647a71b055
143392aaa38c
151b455e7b55
hexfb02a6858

67380078680 has 32 divisors (see below), whose sum is σ = 160523130240. Its totient is φ = 25366617600.

The previous prime is 67380078643. The next prime is 67380078683. The reversal of 67380078680 is 8687008376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67380078683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49543496 + ... + 49544855.

It is an arithmetic number, because the mean of its divisors is an integer number (5016347820).

Almost surely, 267380078680 is an apocalyptic number.

It is an amenable number.

67380078680 is an abundant number, since it is smaller than the sum of its proper divisors (93143051560).

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

67380078680 is a wasteful number, since it uses less digits than its factorization.

67380078680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99088379 (or 99088375 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 67380078680 in words is "sixty-seven billion, three hundred eighty million, seventy-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 99088351 198176702 396353404 495441755 792706808 990883510 1684501967 1981767020 3369003934 3963534040 6738007868 8422509835 13476015736 16845019670 33690039340 67380078680