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57157366805 = 5711148460693
BaseRepresentation
bin110101001110110110…
…000011010000010101
312110112101200002002022
4311032312003100111
51414024241214210
642131400422525
74062261413240
oct651666032025
9173471602068
1057157366805
1122270930730
12b0b1a77a45
13550b853a06
142aa3132257
151747de6155
hexd4ed83415

57157366805 has 16 divisors (see below), whose sum is σ = 85513359744. Its totient is φ = 35630566080.

The previous prime is 57157366801. The next prime is 57157366813. The reversal of 57157366805 is 50866375175.

It is a happy number.

It is not a de Polignac number, because 57157366805 - 22 = 57157366801 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 (57157366801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74229962 + ... + 74230731.

It is an arithmetic number, because the mean of its divisors is an integer number (5344584984).

Almost surely, 257157366805 is an apocalyptic number.

57157366805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57157366805 is a deficient number, since it is larger than the sum of its proper divisors (28355992939).

57157366805 is a wasteful number, since it uses less digits than its factorization.

57157366805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148460716.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 57157366805 in words is "fifty-seven billion, one hundred fifty-seven million, three hundred sixty-six thousand, eight hundred five".

Divisors: 1 5 7 11 35 55 77 385 148460693 742303465 1039224851 1633067623 5196124255 8165338115 11431473361 57157366805