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38788378486 = 21113135623701
BaseRepresentation
bin100100000111111101…
…111010111101110110
310201010020011210020121
4210013331322331312
51113414311102421
625452533322154
72542132530364
oct440775727566
9121106153217
1038788378486
11154a5034950
12762619635a
13387204c460
141c3d6d4634
151020452d41
hex907f7af76

38788378486 has 16 divisors (see below), whose sum is σ = 68354345808. Its totient is φ = 16274844000.

The previous prime is 38788378411. The next prime is 38788378487. The reversal of 38788378486 is 68487388783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38788378487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67811565 + ... + 67812136.

It is an arithmetic number, because the mean of its divisors is an integer number (4272146613).

Almost surely, 238788378486 is an apocalyptic number.

38788378486 is a deficient number, since it is larger than the sum of its proper divisors (29565967322).

38788378486 is a wasteful number, since it uses less digits than its factorization.

38788378486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135623727.

The product of its digits is 346816512, while the sum is 70.

The spelling of 38788378486 in words is "thirty-eight billion, seven hundred eighty-eight million, three hundred seventy-eight thousand, four hundred eighty-six".

Divisors: 1 2 11 13 22 26 143 286 135623701 271247402 1491860711 1763108113 2983721422 3526216226 19394189243 38788378486