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38815020338623 = 278972937190811
BaseRepresentation
bin10001101001101010100110…
…11111111100110110111111
312002102200100111122011100221
420310311103133330312333
520041421130201313443
6214315212453402211
711114202250106254
oct1064652337746677
9162380314564327
1038815020338623
11114053a3091781
12442a73b939367
131887318aca3b9
1498292ab8b42b
15474a03a11eed
hex234d537fcdbf

38815020338623 has 8 divisors (see below), whose sum is σ = 38829673380240. Its totient is φ = 38800367830080.

The previous prime is 38815020338621. The next prime is 38815020338629. The reversal of 38815020338623 is 32683302051883.

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 38815020338623 - 21 = 38815020338621 is a prime.

It is a super-2 number, since 2×388150203386232 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38815020338621) 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, 203325888 + ... + 203516698.

It is an arithmetic number, because the mean of its divisors is an integer number (4853709172530).

Almost surely, 238815020338623 is an apocalyptic number.

38815020338623 is a deficient number, since it is larger than the sum of its proper divisors (14653041617).

38815020338623 is a wasteful number, since it uses less digits than its factorization.

38815020338623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266537.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 38815020338623 in words is "thirty-eight trillion, eight hundred fifteen billion, twenty million, three hundred thirty-eight thousand, six hundred twenty-three".

Divisors: 1 2789 72937 190811 203421293 532171879 13917181907 38815020338623