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38688178871 = 83895237333
BaseRepresentation
bin100100000001111111…
…101100001010110111
310200212020122010012202
4210001333230022313
51113213133210441
625434553535115
72536505044256
oct440177541267
9120766563182
1038688178871
1115453517451
1275b871449b
133857368b44
141c3029079d
15101675e19b
hex901fec2b7

38688178871 has 8 divisors (see below), whose sum is σ = 39594245040. Its totient is φ = 37792587712.

The previous prime is 38688178831. The next prime is 38688178883. The reversal of 38688178871 is 17887188683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38688178871 - 222 = 38683984567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38688178798 and 38688178807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38688178811) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2611280 + ... + 2626053.

It is an arithmetic number, because the mean of its divisors is an integer number (4949280630).

Almost surely, 238688178871 is an apocalyptic number.

38688178871 is a deficient number, since it is larger than the sum of its proper divisors (906066169).

38688178871 is an equidigital number, since it uses as much as digits as its factorization.

38688178871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237505.

The product of its digits is 28901376, while the sum is 65.

The spelling of 38688178871 in words is "thirty-eight billion, six hundred eighty-eight million, one hundred seventy-eight thousand, eight hundred seventy-one".

Divisors: 1 83 89 7387 5237333 434698639 466122637 38688178871