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57078861839 = 1271289934843
BaseRepresentation
bin110101001010001010…
…100101000000001111
312110022220221121111222
4311022022211000033
51413344142034324
642115514033555
74060316214626
oct651212450017
9173286847458
1057078861839
112223059079a
12b08b7188bb
1354c84c7c7c
142a969386bd
15174108a55e
hexd4a2a500f

57078861839 has 8 divisors (see below), whose sum is σ = 57534412800. Its totient is φ = 56623406616.

The previous prime is 57078861811. The next prime is 57078861857. The reversal of 57078861839 is 93816887075.

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 57078861839 - 228 = 56810426383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57074861839) 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, 1620752 + ... + 1655594.

It is an arithmetic number, because the mean of its divisors is an integer number (7191801600).

Almost surely, 257078861839 is an apocalyptic number.

57078861839 is a deficient number, since it is larger than the sum of its proper divisors (455550961).

57078861839 is a wasteful number, since it uses less digits than its factorization.

57078861839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47869.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 57078861839 in words is "fifty-seven billion, seventy-eight million, eight hundred sixty-one thousand, eight hundred thirty-nine".

Divisors: 1 127 12899 34843 1638173 4425061 449439857 57078861839