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69385864080 = 243513314011789
BaseRepresentation
bin100000010011110111…
…0000100001110010000
320122002121202002202210
41000213232010032100
52114100240122310
651513031512120
75004306053631
oct1004756041620
9218077662683
1069385864080
1127476569725
1211545228640
13670a13c810
14350322d888
151c1174e820
hex1027b84390

69385864080 has 320 divisors, whose sum is σ = 239844648960. Its totient is φ = 16478208000.

The previous prime is 69385864073. The next prime is 69385864081. The reversal of 69385864080 is 8046858396.

It is a super-3 number, since 3×693858640803 (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 69385864080.

It is not an unprimeable number, because it can be changed into a prime (69385864081) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38783826 + ... + 38785614.

It is an arithmetic number, because the mean of its divisors is an integer number (749514528).

Almost surely, 269385864080 is an apocalyptic number.

69385864080 is a gapful number since it is divisible by the number (60) 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 69385864080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119922324480).

69385864080 is an abundant number, since it is smaller than the sum of its proper divisors (170458784880).

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

69385864080 is a wasteful number, since it uses less digits than its factorization.

69385864080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 69385864080 in words is "sixty-nine billion, three hundred eighty-five million, eight hundred sixty-four thousand, eighty".