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128103728053 = 725659461983
BaseRepresentation
bin111011101001110010…
…0111100001110110101
3110020122202202122112111
41313103210330032311
54044324023244203
6134503335251021
712153346502500
oct1672344741665
9406582678474
10128103728053
114a36823aa34
12209b1819a71
13c107077b22
1462b36d2137
1534eb64026d
hex1dd393c3b5

128103728053 has 12 divisors (see below), whose sum is σ = 149045278080. Its totient is φ = 109783554552.

The previous prime is 128103727981. The next prime is 128103728087. The reversal of 128103728053 is 350827301821.

It is a happy number.

It is not a de Polignac number, because 128103728053 - 233 = 119513793461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128103727997 and 128103728015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128103728353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46300 + ... + 508282.

It is an arithmetic number, because the mean of its divisors is an integer number (12420439840).

Almost surely, 2128103728053 is an apocalyptic number.

It is an amenable number.

128103728053 is a deficient number, since it is larger than the sum of its proper divisors (20941550027).

128103728053 is an equidigital number, since it uses as much as digits as its factorization.

128103728053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467656 (or 467649 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 128103728053 in words is "one hundred twenty-eight billion, one hundred three million, seven hundred twenty-eight thousand, fifty-three".

Divisors: 1 7 49 5659 39613 277291 461983 3233881 22637167 2614361797 18300532579 128103728053