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53868700205551 = 7112250131091663
BaseRepresentation
bin11000011111110010010001…
…01111011000000111101111
321001201210112100010022200001
430033321020233120013233
524030041044223034201
6310322534513045131
714226612415533550
oct1417711057300757
9231653470108601
1053868700205551
1116189650a03840
1260601468567a7
132409a4828163a
14d4338a9b2327
156363adb07301
hex30fe48bd81ef

53868700205551 has 16 divisors (see below), whose sum is σ = 67163963839488. Its totient is φ = 41973743700000.

The previous prime is 53868700205539. The next prime is 53868700205587. The reversal of 53868700205551 is 15550200786835.

It is not a de Polignac number, because 53868700205551 - 235 = 53834340467183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53868700205492 and 53868700205501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53868700205501) 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, 13813255 + ... + 17278408.

It is an arithmetic number, because the mean of its divisors is an integer number (4197747739968).

Almost surely, 253868700205551 is an apocalyptic number.

53868700205551 is a deficient number, since it is larger than the sum of its proper divisors (13295263633937).

53868700205551 is a wasteful number, since it uses less digits than its factorization.

53868700205551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31114182.

The product of its (nonzero) digits is 10080000, while the sum is 55.

The spelling of 53868700205551 in words is "fifty-three trillion, eight hundred sixty-eight billion, seven hundred million, two hundred five thousand, five hundred fifty-one".

Divisors: 1 7 11 77 22501 157507 247511 1732577 31091663 217641641 342008293 2394058051 699593509163 4897154564141 7695528600793 53868700205551