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57513066217 = 1491997012767
BaseRepresentation
bin110101100100000010…
…111011111011101001
312111110011222110221121
4311210002323323221
51420241321104332
642230544335241
74104140665615
oct654402737351
9174404873847
1057513066217
1122433698992
12b191014521
135567454139
142ad8484345
151769258797
hexd640bbee9

57513066217 has 16 divisors (see below), whose sum is σ = 58294080000. Its totient is φ = 56738404800.

The previous prime is 57513066187. The next prime is 57513066223. The reversal of 57513066217 is 71266031575.

It is a cyclic number.

It is not a de Polignac number, because 57513066217 - 223 = 57504677609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57513063217) 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, 20783968 + ... + 20786734.

It is an arithmetic number, because the mean of its divisors is an integer number (3643380000).

Almost surely, 257513066217 is an apocalyptic number.

It is an amenable number.

57513066217 is a deficient number, since it is larger than the sum of its proper divisors (781013783).

57513066217 is a wasteful number, since it uses less digits than its factorization.

57513066217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 57513066217 in words is "fifty-seven billion, five hundred thirteen million, sixty-six thousand, two hundred seventeen".

Divisors: 1 149 199 701 2767 29651 104449 139499 412283 550633 1939667 20785351 82044317 289010383 385993733 57513066217