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69138837875 = 535389117259
BaseRepresentation
bin100000001100011111…
…1101111000101110011
320121110101220212112002
41000120333233011303
52113044020303000
651432325124215
74665216265622
oct1003077570563
9217411825462
1069138837875
112735a087238
121149655966b
13669abcb873
1434bc4c96b9
151be9c068d5
hex1018fef173

69138837875 has 32 divisors (see below), whose sum is σ = 88901841600. Its totient is φ = 53657260800.

The previous prime is 69138837811. The next prime is 69138837881. The reversal of 69138837875 is 57873883196.

It is not a de Polignac number, because 69138837875 - 26 = 69138837811 is a prime.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 530996 + ... + 648254.

It is an arithmetic number, because the mean of its divisors is an integer number (2778182550).

Almost surely, 269138837875 is an apocalyptic number.

69138837875 is a deficient number, since it is larger than the sum of its proper divisors (19763003725).

69138837875 is a wasteful number, since it uses less digits than its factorization.

69138837875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117416 (or 117406 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 65.

The spelling of 69138837875 in words is "sixty-nine billion, one hundred thirty-eight million, eight hundred thirty-seven thousand, eight hundred seventy-five".

Divisors: 1 5 25 53 89 125 265 445 1325 2225 4717 6625 11125 23585 117259 117925 586295 589625 2931475 6214727 10436051 14657375 31073635 52180255 155368175 260901275 553110703 776840875 1304506375 2765553515 13827767575 69138837875