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52111986679 = 197940186579
BaseRepresentation
bin110000100010000111…
…011100111111110111
311222111202220012200201
4300202013130333313
51323211132033204
635535004421331
73523245402214
oct604207347767
9158452805621
1052111986679
1120111948995
12a124247847
134bb649679c
14274501ab0b
15154eec89a4
hexc221dcff7

52111986679 has 16 divisors (see below), whose sum is σ = 55688256000. Its totient is φ = 48622204800.

The previous prime is 52111986671. The next prime is 52111986713. The reversal of 52111986679 is 97668911125.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 52111986679 - 23 = 52111986671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52111986671) 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, 558612 + ... + 645190.

It is an arithmetic number, because the mean of its divisors is an integer number (3480516000).

Almost surely, 252111986679 is an apocalyptic number.

52111986679 is a deficient number, since it is larger than the sum of its proper divisors (3576269321).

52111986679 is a wasteful number, since it uses less digits than its factorization.

52111986679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87078.

The product of its digits is 1632960, while the sum is 55.

The spelling of 52111986679 in words is "fifty-two billion, one hundred eleven million, nine hundred eighty-six thousand, six hundred seventy-nine".

Divisors: 1 19 79 401 1501 7619 31679 86579 601901 1645001 6839741 34718179 129955079 659645401 2742736141 52111986679