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38871209516388 = 22313723644288027
BaseRepresentation
bin10001101011010011010001…
…01000101001110101100100
312002122001101102111010202220
420311221220220221311210
520043331214114011023
6214401104230432340
711121231544202124
oct1065515050516544
9162561342433686
1038871209516388
1111427207446677
1244396015026b0
13188c701ba1292
1498553b492c84
154761e190c3e3
hex235a68a29d64

38871209516388 has 24 divisors (see below), whose sum is σ = 91361528940192. Its totient is φ = 12862492686144.

The previous prime is 38871209516383. The next prime is 38871209516429. The reversal of 38871209516388 is 88361590217883.

It is not an unprimeable number, because it can be changed into a prime (38871209516383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11822142370 + ... + 11822145657.

It is an arithmetic number, because the mean of its divisors is an integer number (3806730372508).

Almost surely, 238871209516388 is an apocalyptic number.

It is an amenable number.

38871209516388 is an abundant number, since it is smaller than the sum of its proper divisors (52490319423804).

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

38871209516388 is a wasteful number, since it uses less digits than its factorization.

38871209516388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23644288171 (or 23644288169 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 69.

The spelling of 38871209516388 in words is "thirty-eight trillion, eight hundred seventy-one billion, two hundred nine million, five hundred sixteen thousand, three hundred eighty-eight".

Divisors: 1 2 3 4 6 12 137 274 411 548 822 1644 23644288027 47288576054 70932864081 94577152108 141865728162 283731456324 3239267459699 6478534919398 9717802379097 12957069838796 19435604758194 38871209516388