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78480966176 = 2561109368857
BaseRepresentation
bin100100100010111010…
…1001000001000100000
321111120110210011022222
41021011311020020200
52241212111404201
6100015331250212
75445555130364
oct1110565101040
9244513704288
1078480966176
1130313506528
1213263149968
13752950a132
143b2711d2a4
152094e6491b
hex1245d48220

78480966176 has 48 divisors (see below), whose sum is σ = 158483528280. Its totient is φ = 38242990080.

The previous prime is 78480966163. The next prime is 78480966181. The reversal of 78480966176 is 67166908487.

It can be written as a sum of positive squares in 4 ways, for example, as 48022339600 + 30458626576 = 219140^2 + 174524^2 .

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, 28340 + ... + 397196.

Almost surely, 278480966176 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 78480966176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79241764140).

78480966176 is an abundant number, since it is smaller than the sum of its proper divisors (80002562104).

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

78480966176 is a wasteful number, since it uses less digits than its factorization.

78480966176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369037 (or 369029 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 78480966176 in words is "seventy-eight billion, four hundred eighty million, nine hundred sixty-six thousand, one hundred seventy-six".

Divisors: 1 2 4 8 16 32 61 109 122 218 244 436 488 872 976 1744 1952 3488 6649 13298 26596 53192 106384 212768 368857 737714 1475428 2950856 5901712 11803424 22500277 40205413 45000554 80410826 90001108 160821652 180002216 321643304 360004432 643286608 720008864 1286573216 2452530193 4905060386 9810120772 19620241544 39240483088 78480966176