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78530751936 = 2634713612729
BaseRepresentation
bin100100100100011001…
…1000010110111000000
321111200221110112120000
41021020303002313000
52241312333030221
6100024310320000
75450031243360
oct1111063026700
9244627415500
1078530751936
113033962028a
1213277959000
13753691bb70
143b2d99c9a0
1520994eae26
hex1248cc2dc0

78530751936 has 560 divisors, whose sum is σ = 291314063040. Its totient is φ = 20364410880.

The previous prime is 78530751899. The next prime is 78530751941. The reversal of 78530751936 is 63915703587.

78530751936 is a `hidden beast` number, since 7 + 8 + 530 + 75 + 1 + 9 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28775020 + ... + 28777748.

It is an arithmetic number, because the mean of its divisors is an integer number (520203684).

Almost surely, 278530751936 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 78530751936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145657031520).

78530751936 is an abundant number, since it is smaller than the sum of its proper divisors (212783311104).

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

78530751936 is a wasteful number, since it uses less digits than its factorization.

78530751936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834 (or 2815 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 78530751936 in words is "seventy-eight billion, five hundred thirty million, seven hundred fifty-one thousand, nine hundred thirty-six".