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80519604768 = 25331492392617
BaseRepresentation
bin100101011111101010…
…1111010101000100000
321200211112211201202000
41022333111322220200
52304401004323033
6100553514324000
75550231230211
oct1127725725040
9250745751660
1080519604768
113116a243909
1213731a29600
137792992465
143c7bb95408
152163e0aa13
hex12bf57aa20

80519604768 has 192 divisors, whose sum is σ = 237504960000. Its totient is φ = 26538043392.

The previous prime is 80519604749. The next prime is 80519604787. The reversal of 80519604768 is 86740691508.

80519604768 is a `hidden beast` number, since 8 + 0 + 519 + 60 + 4 + 7 + 68 = 666.

It is an interprime number because it is at equal distance from previous prime (80519604749) and next prime (80519604787).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30766596 + ... + 30769212.

It is an arithmetic number, because the mean of its divisors is an integer number (1237005000).

Almost surely, 280519604768 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 80519604768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118752480000).

80519604768 is an abundant number, since it is smaller than the sum of its proper divisors (156985355232).

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

80519604768 is a wasteful number, since it uses less digits than its factorization.

80519604768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024 (or 3010 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 80519604768 in words is "eighty billion, five hundred nineteen million, six hundred four thousand, seven hundred sixty-eight".