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457143612857 = 2729458336551
BaseRepresentation
bin1101010011011111110…
…00011111010110111001
31121200222010100200012122
412221233320133112321
524442212231102412
6550001530051025
745012305411261
oct6515770372671
91550863320178
10457143612857
11166967719528
1274720579a75
1334154387909
14181a95547a1
15bd584c4572
hex6a6fe1f5b9

457143612857 has 8 divisors (see below), whose sum is σ = 457423424640. Its totient is φ = 456863888800.

The previous prime is 457143612851. The next prime is 457143612881. The reversal of 457143612857 is 758216341754.

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 457143612857 - 210 = 457143611833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 457143612799 and 457143612808.

It is not an unprimeable number, because it can be changed into a prime (457143612851) 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, 12488732 + ... + 12525282.

It is an arithmetic number, because the mean of its divisors is an integer number (57177928080).

Almost surely, 2457143612857 is an apocalyptic number.

It is an amenable number.

457143612857 is a deficient number, since it is larger than the sum of its proper divisors (279811783).

457143612857 is a wasteful number, since it uses less digits than its factorization.

457143612857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43863.

The product of its digits is 5644800, while the sum is 53.

The spelling of 457143612857 in words is "four hundred fifty-seven billion, one hundred forty-three million, six hundred twelve thousand, eight hundred fifty-seven".

Divisors: 1 2729 4583 36551 12507007 99747679 167513233 457143612857