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129128053793 = 7116710890449
BaseRepresentation
bin111100001000010100…
…0011011110000100001
3110100022011012210021212
41320100220123300201
54103423240210133
6135153130155505
712220625230064
oct1702050336041
9410264183255
10129128053793
114a843469032
1221038882b95
13c23b35132b
14636d7728db
15355b529148
hex1e10a1bc21

129128053793 has 8 divisors (see below), whose sum is σ = 131730883200. Its totient is φ = 126547005760.

The previous prime is 129128053781. The next prime is 129128053829. The reversal of 129128053793 is 397350821921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129128053793 - 210 = 129128052769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129128052793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5433368 + ... + 5457081.

It is an arithmetic number, because the mean of its divisors is an integer number (16466360400).

Almost surely, 2129128053793 is an apocalyptic number.

It is an amenable number.

129128053793 is a deficient number, since it is larger than the sum of its proper divisors (2602829407).

129128053793 is a wasteful number, since it uses less digits than its factorization.

129128053793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10890687.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 129128053793 in words is "one hundred twenty-nine billion, one hundred twenty-eight million, fifty-three thousand, seven hundred ninety-three".

Divisors: 1 71 167 11857 10890449 773221879 1818704983 129128053793