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78001822080 = 2732573133037
BaseRepresentation
bin100100010100101000…
…1010101100110000000
321110100002012010012100
41020221101111212000
52234221431301310
655500013430400
75430646356000
oct1105121254600
9243302163170
1078001822080
1130097aa4476
121314a79b400
137481177c10
143abd636000
152067d6aec0
hex1229455980

78001822080 has 768 divisors, whose sum is σ = 338384592000. Its totient is φ = 16452108288.

The previous prime is 78001822069. The next prime is 78001822111. The reversal of 78001822080 is 8022810087.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25682322 + ... + 25685358.

Almost surely, 278001822080 is an apocalyptic number.

78001822080 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78001822080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169192296000).

78001822080 is an abundant number, since it is smaller than the sum of its proper divisors (260382769920).

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

78001822080 is a wasteful number, since it uses less digits than its factorization.

78001822080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The spelling of 78001822080 in words is "seventy-eight billion, one million, eight hundred twenty-two thousand, eighty".