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128052552061 = 72431073831483
BaseRepresentation
bin111011101000010000…
…1101110000101111101
3110020112012110122021101
41313100201232011331
54044222423131221
6134454310333101
712152155506400
oct1672041560575
9406465418241
10128052552061
114a341366725
122099865a191
13c0c959a385
1462aa9add37
1534e6dd1d91
hex1dd086e17d

128052552061 has 48 divisors (see below), whose sum is σ = 154353475584. Its totient is φ = 105856130016.

The previous prime is 128052552059. The next prime is 128052552109. The reversal of 128052552061 is 160255250821.

It is not a de Polignac number, because 128052552061 - 21 = 128052552059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128052552061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128052552161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86346226 + ... + 86347708.

It is an arithmetic number, because the mean of its divisors is an integer number (3215697408).

Almost surely, 2128052552061 is an apocalyptic number.

It is an amenable number.

128052552061 is a deficient number, since it is larger than the sum of its proper divisors (26300923523).

128052552061 is a wasteful number, since it uses less digits than its factorization.

128052552061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 128052552061 in words is "one hundred twenty-eight billion, fifty-two million, five hundred fifty-two thousand, sixty-one".

Divisors: 1 7 43 49 107 301 383 749 1483 2107 2681 4601 5243 10381 16469 18767 32207 40981 63769 72667 115283 158681 225449 286867 446383 567989 806981 1110767 1762183 2008069 3124681 3975923 6823283 7775369 12335281 24423527 27831461 47762981 60774823 86346967 170964689 334340867 425423761 1196752823 2613317389 2977966327 18293221723 128052552061