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105510055061 = 1812931989517
BaseRepresentation
bin110001001000011100…
…0111010110010010101
3101002100011210010211002
41202100320322302111
53212041033230221
6120245354353045
710423431445655
oct1422070726225
9332304703732
10105510055061
1140823748014
121854712b785
139c46234058
14516cb74365
152b27d4380b
hex1890e3ac95

105510055061 has 8 divisors (see below), whose sum is σ = 106455129144. Its totient is φ = 104568960960.

The previous prime is 105510054967. The next prime is 105510055097. The reversal of 105510055061 is 160550015501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 124768900 + 105385286161 = 11170^2 + 324631^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-105510055061 is a prime.

It is a super-2 number, since 2×1055100550612 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105510055361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941726 + ... + 1047791.

It is an arithmetic number, because the mean of its divisors is an integer number (13306891143).

Almost surely, 2105510055061 is an apocalyptic number.

It is an amenable number.

105510055061 is a deficient number, since it is larger than the sum of its proper divisors (945074083).

105510055061 is a wasteful number, since it uses less digits than its factorization.

105510055061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989991.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 105510055061 in words is "one hundred five billion, five hundred ten million, fifty-five thousand, sixty-one".

Divisors: 1 181 293 53033 1989517 360102577 582928481 105510055061