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57906005189 = 173334716793
BaseRepresentation
bin110101111011011101…
…111000010011000101
312112110120100211212212
4311323131320103011
51422042414131224
642333542353205
74116651631364
oct657335702305
9175416324785
1057906005189
112261548083a
12b28072b805
1355ca9927c6
142b3472b7db
15178d9c4d0e
hexd7b7784c5

57906005189 has 4 divisors (see below), whose sum is σ = 58240722156. Its totient is φ = 57571288224.

The previous prime is 57906005137. The next prime is 57906005207. The reversal of 57906005189 is 98150060975.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56279496289 + 1626508900 = 237233^2 + 40330^2 .

It is a cyclic number.

It is not a de Polignac number, because 57906005189 - 216 = 57905939653 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 (57906008189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167358224 + ... + 167358569.

It is an arithmetic number, because the mean of its divisors is an integer number (14560180539).

Almost surely, 257906005189 is an apocalyptic number.

It is an amenable number.

57906005189 is a deficient number, since it is larger than the sum of its proper divisors (334716967).

57906005189 is a wasteful number, since it uses less digits than its factorization.

57906005189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334716966.

The product of its (nonzero) digits is 680400, while the sum is 50.

The spelling of 57906005189 in words is "fifty-seven billion, nine hundred six million, five thousand, one hundred eighty-nine".

Divisors: 1 173 334716793 57906005189