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38790561361 = 314283292157
BaseRepresentation
bin100100001000000110…
…001111111001010001
310201010101021200120211
4210020012033321101
51113420340430421
625453052204121
72542160221426
oct441006177121
9121111250524
1038790561361
11154a6295982
127626a69641
133872634bb6
141c3db01d4d
1510207349e1
hex90818fe51

38790561361 has 8 divisors (see below), whose sum is σ = 40051355904. Its totient is φ = 37530359760.

The previous prime is 38790561349. The next prime is 38790561379. The reversal of 38790561361 is 16316509783.

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 38790561361 - 213 = 38790553169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38790562361) 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, 13306 + ... + 278851.

It is an arithmetic number, because the mean of its divisors is an integer number (5006419488).

Almost surely, 238790561361 is an apocalyptic number.

38790561361 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38790561361 is a deficient number, since it is larger than the sum of its proper divisors (1260794543).

38790561361 is a wasteful number, since it uses less digits than its factorization.

38790561361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296471.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 38790561361 in words is "thirty-eight billion, seven hundred ninety million, five hundred sixty-one thousand, three hundred sixty-one".

Divisors: 1 31 4283 132773 292157 9056867 1251308431 38790561361