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27857045375 = 53613653383
BaseRepresentation
bin11001111100011010…
…001100011101111111
32122220101221112021022
4121330122030131333
5424022400423000
620444121054355
72004215656505
oct317432143577
978811845238
1027857045375
11108a5637555
1254953273bb
13281c417903
1414c39ba675
15ad0929585
hex67c68c77f

27857045375 has 16 divisors (see below), whose sum is σ = 35335530048. Its totient is φ = 21920292000.

The previous prime is 27857045351. The next prime is 27857045383. The reversal of 27857045375 is 57354075872.

It is not a de Polignac number, because 27857045375 - 226 = 27789936511 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819067 + ... + 1834316.

It is an arithmetic number, because the mean of its divisors is an integer number (2208470628).

Almost surely, 227857045375 is an apocalyptic number.

27857045375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27857045375 is a deficient number, since it is larger than the sum of its proper divisors (7478484673).

27857045375 is an equidigital number, since it uses as much as digits as its factorization.

27857045375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653459 (or 3653449 counting only the distinct ones).

The product of its (nonzero) digits is 8232000, while the sum is 53.

The spelling of 27857045375 in words is "twenty-seven billion, eight hundred fifty-seven million, forty-five thousand, three hundred seventy-five".

Divisors: 1 5 25 61 125 305 1525 7625 3653383 18266915 91334575 222856363 456672875 1114281815 5571409075 27857045375