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69690057970 = 251310943111411
BaseRepresentation
bin100000011100111011…
…0011110010011110010
320122212211010202100011
41000321312132103302
52120211123323340
652003135445134
75014661501401
oct1007166362362
9218784122304
1069690057970
1127612248035
121160b0867aa
1367581784c0
1435317b5638
151c2d2db0ea
hex1039d9e4f2

69690057970 has 64 divisors (see below), whose sum is σ = 136659156480. Its totient is φ = 25434259200.

The previous prime is 69690057959. The next prime is 69690058003. The reversal of 69690057970 is 7975009696.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6101565 + ... + 6112975.

It is an arithmetic number, because the mean of its divisors is an integer number (2135299320).

Almost surely, 269690057970 is an apocalyptic number.

69690057970 is a deficient number, since it is larger than the sum of its proper divisors (66969098510).

69690057970 is a wasteful number, since it uses less digits than its factorization.

69690057970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11971.

The product of its (nonzero) digits is 6429780, while the sum is 58.

The spelling of 69690057970 in words is "sixty-nine billion, six hundred ninety million, fifty-seven thousand, nine hundred seventy".

Divisors: 1 2 5 10 13 26 65 109 130 218 431 545 862 1090 1417 2155 2834 4310 5603 7085 11206 11411 14170 22822 28015 46979 56030 57055 93958 114110 148343 234895 296686 469790 610727 741715 1221454 1243799 1483430 2487598 3053635 4918141 6107270 6218995 9836282 12437990 16169387 24590705 32338774 49181410 63935833 80846935 127871666 161693870 319679165 536077369 639358330 1072154738 2680386845 5360773690 6969005797 13938011594 34845028985 69690057970