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145939168800 = 2533527199397
BaseRepresentation
bin1000011111101010100…
…1101111111000100000
3111221200202021220201000
42013322221233320200
54342340411400200
6151013222512000
713354336316145
oct2077251577040
9457622256630
10145939168800
115698a946607
122434a895600
13109ba17c669
1470c63243cc
153be2340300
hex21faa6fe20

145939168800 has 288 divisors, whose sum is σ = 528603667200. Its totient is φ = 38858849280.

The previous prime is 145939168763. The next prime is 145939168861. The reversal of 145939168800 is 8861939541.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15525702 + ... + 15535098.

It is an arithmetic number, because the mean of its divisors is an integer number (1835429400).

Almost surely, 2145939168800 is an apocalyptic number.

145939168800 is a gapful number since it is divisible by the number (10) 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 145939168800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264301833600).

145939168800 is an abundant number, since it is smaller than the sum of its proper divisors (382664498400).

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

145939168800 is a wasteful number, since it uses less digits than its factorization.

145939168800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10145 (or 10126 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 145939168800 in words is "one hundred forty-five billion, nine hundred thirty-nine million, one hundred sixty-eight thousand, eight hundred".