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107879191085 = 5177712141721
BaseRepresentation
bin110010001111000011…
…0011101001000101101
3101022110021201201110202
41210132012131020231
53231414033103320
6121320425243245
710536226665041
oct1443606351055
9338407651422
10107879191085
1141829a99a76
1218aa8633525
13a2330046a3
14531567c021
152c15d1eb75
hex191e19d22d

107879191085 has 8 divisors (see below), whose sum is σ = 129527890296. Its totient is φ = 86254778880.

The previous prime is 107879191037. The next prime is 107879191093. The reversal of 107879191085 is 580191978701.

It can be written as a sum of positive squares in 4 ways, for example, as 3729056356 + 104150134729 = 61066^2 + 322723^2 .

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

It is not a de Polignac number, because 107879191085 - 28 = 107879190829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 107879191085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6061976 + ... + 6079745.

It is an arithmetic number, because the mean of its divisors is an integer number (16190986287).

Almost surely, 2107879191085 is an apocalyptic number.

It is an amenable number.

107879191085 is a deficient number, since it is larger than the sum of its proper divisors (21648699211).

107879191085 is a wasteful number, since it uses less digits than its factorization.

107879191085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12143503.

The product of its (nonzero) digits is 1270080, while the sum is 56.

The spelling of 107879191085 in words is "one hundred seven billion, eight hundred seventy-nine million, one hundred ninety-one thousand, eighty-five".

Divisors: 1 5 1777 8885 12141721 60708605 21575838217 107879191085