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128034302808251 = 7211739117300917
BaseRepresentation
bin11101000111001001001111…
…001000110101000010111011
3121210022221220200221122110102
4131013021033020311002323
5113240203223004331001
61132150051405110015
735653113244232630
oct3507111710650273
9553287820848412
10128034302808251
11378830520a6a54
1212439aa4b5830b
1356597769796b8
142388c713b2187
15ec06ecd30e6b
hex74724f2350bb

128034302808251 has 16 divisors (see below), whose sum is σ = 147217344126720. Its totient is φ = 109075775770080.

The previous prime is 128034302808193. The next prime is 128034302808253. The reversal of 128034302808251 is 152808203430821.

It is not a de Polignac number, because 128034302808251 - 214 = 128034302791867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128034302808196 and 128034302808205.

It is not an unprimeable number, because it can be changed into a prime (128034302808253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57558956 + ... + 59741961.

It is an arithmetic number, because the mean of its divisors is an integer number (9201084007920).

Almost surely, 2128034302808251 is an apocalyptic number.

128034302808251 is a deficient number, since it is larger than the sum of its proper divisors (19183041318469).

128034302808251 is a wasteful number, since it uses less digits than its factorization.

128034302808251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117301874.

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 128034302808251 in words is "one hundred twenty-eight trillion, thirty-four billion, three hundred two million, eight hundred eight thousand, two hundred fifty-one".

Divisors: 1 7 211 739 1477 5173 155929 1091503 117300917 821106419 24750493487 86685377663 173253454409 606797643641 18290614686893 128034302808251