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12520522383696 = 243617218120521
BaseRepresentation
bin1011011000110010100101…
…0010100000000101010000
31122022221122201202221000000
42312030221102200011100
53120114012212234241
642343503143130000
72431402134200325
oct266145122400520
948287581687000
1012520522383696
113a97a18526988
1214a2689743900
136ca8ac506762
14313dd4628b4c
1516aa4a5a9eb6
hexb63294a0150

12520522383696 has 420 divisors, whose sum is σ = 38851814143324. Its totient is φ = 3906114969600.

The previous prime is 12520522383653. The next prime is 12520522383697. The reversal of 12520522383696 is 69638322502521.

It is a happy number.

12520522383696 is a `hidden beast` number, since 1 + 2 + 5 + 20 + 522 + 3 + 8 + 3 + 6 + 96 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 10153383696 + 12510369000000 = 100764^2 + 3537000^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520522383697) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 610121916 + ... + 610142436.

Almost surely, 212520522383696 is an apocalyptic number.

12520522383696 is a gapful number since it is divisible by the number (16) 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 12520522383696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19425907071662).

12520522383696 is an abundant number, since it is smaller than the sum of its proper divisors (26331291759628).

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

12520522383696 is a wasteful number, since it uses less digits than its factorization.

12520522383696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20762 (or 20724 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 12520522383696 in words is "twelve trillion, five hundred twenty billion, five hundred twenty-two million, three hundred eighty-three thousand, six hundred ninety-six".