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129894925376 = 2612715981167
BaseRepresentation
bin111100011111001010…
…1110100010001000000
3110102021121012220100002
41320332111310101000
54112011100103001
6135401203015132
712245626435226
oct1707625642100
9412247186302
10129894925376
11500a7331aa7
122121166a4a8
13c3311a52b8
146403556b16
1535a3a0a46b
hex1e3e574440

129894925376 has 28 divisors (see below), whose sum is σ = 259789867008. Its totient is φ = 64436061312.

The previous prime is 129894925339. The next prime is 129894925409. The reversal of 129894925376 is 673529498921.

129894925376 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7982456 + ... + 7998711.

It is an arithmetic number, because the mean of its divisors is an integer number (9278209536).

Almost surely, 2129894925376 is an apocalyptic number.

129894925376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129894925376 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129894925376 is a wasteful number, since it uses less digits than its factorization.

129894925376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15981306 (or 15981296 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 65.

The spelling of 129894925376 in words is "one hundred twenty-nine billion, eight hundred ninety-four million, nine hundred twenty-five thousand, three hundred seventy-six".

Divisors: 1 2 4 8 16 32 64 127 254 508 1016 2032 4064 8128 15981167 31962334 63924668 127849336 255698672 511397344 1022794688 2029608209 4059216418 8118432836 16236865672 32473731344 64947462688 129894925376