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57145711548 = 22317436514559
BaseRepresentation
bin110101001110001001…
…100101101110111100
312110111120201221002010
4311032021211232330
51414013300232143
642130302531220
74062060351012
oct651611455674
9173446657063
1057145711548
112226529a992
12b0a9b96b10
135509302903
142aa177a8b2
151746d92a33
hexd4e265bbc

57145711548 has 48 divisors (see below), whose sum is σ = 144466882560. Its totient is φ = 17511131904.

The previous prime is 57145711543. The next prime is 57145711573. The reversal of 57145711548 is 84511754175.

It is a junction number, because it is equal to n+sod(n) for n = 57145711497 and 57145711506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57145711543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3248508 + ... + 3266051.

It is an arithmetic number, because the mean of its divisors is an integer number (3009726720).

Almost surely, 257145711548 is an apocalyptic number.

It is an amenable number.

57145711548 is an abundant number, since it is smaller than the sum of its proper divisors (87321171012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57145711548 is a wasteful number, since it uses less digits than its factorization.

57145711548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514626 (or 6514624 counting only the distinct ones).

The product of its digits is 784000, while the sum is 48.

The spelling of 57145711548 in words is "fifty-seven billion, one hundred forty-five million, seven hundred eleven thousand, five hundred forty-eight".

Divisors: 1 2 3 4 6 12 17 34 43 51 68 86 102 129 172 204 258 516 731 1462 2193 2924 4386 8772 6514559 13029118 19543677 26058236 39087354 78174708 110747503 221495006 280126037 332242509 442990012 560252074 664485018 840378111 1120504148 1328970036 1680756222 3361512444 4762142629 9524285258 14286427887 19048570516 28572855774 57145711548