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69864444000 = 253653131997
BaseRepresentation
bin100000100010000111…
…1101101000001100000
320200022222021111000000
41001010033231001200
52121040244202000
652032325300000
75022206655441
oct1010417550140
9220288244000
1069864444000
11276a172591a
1211659564600
136785334cc0
14354aa0b2c8
151c3d786000
hex10443ed060

69864444000 has 1344 divisors, whose sum is σ = 294760589760. Its totient is φ = 16124313600.

The previous prime is 69864443977. The next prime is 69864444007. The reversal of 69864444000 is 44446896.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69864444007) by changing a digit.

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 223 ways as a sum of consecutive naturals, for example, 720251952 + ... + 720252048.

It is an arithmetic number, because the mean of its divisors is an integer number (219315915).

Almost surely, 269864444000 is an apocalyptic number.

69864444000 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 69864444000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147380294880).

69864444000 is an abundant number, since it is smaller than the sum of its proper divisors (224896145760).

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

69864444000 is a wasteful number, since it uses less digits than its factorization.

69864444000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 69864444000 in words is "sixty-nine billion, eight hundred sixty-four million, four hundred forty-four thousand".