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78746253080 = 23511253373823
BaseRepresentation
bin100100101010110100…
…1000111011100011000
321112020221222010112212
41021111221013130120
52242233020044310
6100101525254252
75455256051525
oct1112551073430
9245227863485
1078746253080
113043a230500
1213317b64388
13756c472931
143b5045814c
1520ad3b8205
hex1255a47718

78746253080 has 192 divisors, whose sum is σ = 199198802880. Its totient is φ = 27985351680.

The previous prime is 78746253067. The next prime is 78746253127. The reversal of 78746253080 is 8035264787.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95681549 + ... + 95682371.

It is an arithmetic number, because the mean of its divisors is an integer number (1037493765).

Almost surely, 278746253080 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 78746253080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99599401440).

78746253080 is an abundant number, since it is smaller than the sum of its proper divisors (120452549800).

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

78746253080 is a wasteful number, since it uses less digits than its factorization.

78746253080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 78746253080 in words is "seventy-eight billion, seven hundred forty-six million, two hundred fifty-three thousand, eighty".