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2159957521120 = 255726310516977
BaseRepresentation
bin11111011011100111100…
…000000011001011100000
321122111020011010211220011
4133123213200003023200
5240342043111133440
64332134253454304
7312023522000110
oct37334740031340
97574204124804
102159957521120
1176303a78aa33
122aa7454a1394
131288b5a7a059
14767848a7040
153b2bad789ea
hex1f6e78032e0

2159957521120 has 192 divisors, whose sum is σ = 5860469615616. Its totient is φ = 736933478400.

The previous prime is 2159957521109. The next prime is 2159957521121. The reversal of 2159957521120 is 211257599512.

It is a happy number.

It is a super-4 number, since 4×21599575211204 (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159957521121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309579072 + ... + 309586048.

It is an arithmetic number, because the mean of its divisors is an integer number (30523279248).

Almost surely, 22159957521120 is an apocalyptic number.

2159957521120 is a gapful number since it is divisible by the number (20) 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 2159957521120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2930234807808).

2159957521120 is an abundant number, since it is smaller than the sum of its proper divisors (3700512094496).

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

2159957521120 is a wasteful number, since it uses less digits than its factorization.

2159957521120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8313 (or 8305 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 49.

The spelling of 2159957521120 in words is "two trillion, one hundred fifty-nine billion, nine hundred fifty-seven million, five hundred twenty-one thousand, one hundred twenty".