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57871465445 = 564433179633
BaseRepresentation
bin110101111001011010…
…000111101111100101
312112101011101001021002
4311321122013233211
51422010043343240
642330310203045
74116052224413
oct657132075745
9175334331232
1057871465445
11225a7a2a5a2
12b271053485
1355c378b3a1
142b2dcda2b3
15178a950d15
hexd79687be5

57871465445 has 8 divisors (see below), whose sum is σ = 69447222936. Its totient is φ = 46296196096.

The previous prime is 57871465441. The next prime is 57871465447. The reversal of 57871465445 is 54456417875.

It can be written as a sum of positive squares in 4 ways, for example, as 1570616161 + 56300849284 = 39631^2 + 237278^2 .

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 57871465445 - 22 = 57871465441 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 (57871465441) 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, 232349 + ... + 411981.

It is an arithmetic number, because the mean of its divisors is an integer number (8680902867).

Almost surely, 257871465445 is an apocalyptic number.

It is an amenable number.

57871465445 is a deficient number, since it is larger than the sum of its proper divisors (11575757491).

57871465445 is a wasteful number, since it uses less digits than its factorization.

57871465445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244071.

The product of its digits is 18816000, while the sum is 56.

The spelling of 57871465445 in words is "fifty-seven billion, eight hundred seventy-one million, four hundred sixty-five thousand, four hundred forty-five".

Divisors: 1 5 64433 179633 322165 898165 11574293089 57871465445