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105555551131 = 613794565749
BaseRepresentation
bin110001001001110011…
…0011110001110011011
3101002110100101120200201
41202103212132032123
53212134210114011
6120254101443031
710424523244402
oct1422346361633
9332410346621
10105555551131
11408473a1978
121855a410477
139c527a33c4
145174c18639
152b2bd2dcc1
hex189399e39b

105555551131 has 8 divisors (see below), whose sum is σ = 107569070000. Its totient is φ = 103551164640.

The previous prime is 105555551093. The next prime is 105555551183. The reversal of 105555551131 is 131155555501.

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 105555551131 - 29 = 105555550619 is a prime.

It is a super-2 number, since 2×1055555511312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105555551191) 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, 2259756 + ... + 2305993.

It is an arithmetic number, because the mean of its divisors is an integer number (13446133750).

Almost surely, 2105555551131 is an apocalyptic number.

105555551131 is a deficient number, since it is larger than the sum of its proper divisors (2013518869).

105555551131 is an equidigital number, since it uses as much as digits as its factorization.

105555551131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566189.

The product of its (nonzero) digits is 46875, while the sum is 37.

The spelling of 105555551131 in words is "one hundred five billion, five hundred fifty-five million, five hundred fifty-one thousand, one hundred thirty-one".

Divisors: 1 61 379 23119 4565749 278510689 1730418871 105555551131