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57678441087 = 380239239611
BaseRepresentation
bin110101101101111001…
…110010101001111111
312111212201011101121210
4311231321302221333
51421111140103322
642255213055503
74111216442241
oct655571625177
9174781141553
1057678441087
1122508a81533
12b218487593
1355927a71a7
142b12412091
151778a2370c
hexd6de72a7f

57678441087 has 8 divisors (see below), whose sum is σ = 76905867520. Its totient is φ = 38451654360.

The previous prime is 57678441077. The next prime is 57678441101. The reversal of 57678441087 is 78014487675.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57678441087 - 210 = 57678440063 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 (57678441047) 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, 120912 + ... + 360522.

It is an arithmetic number, because the mean of its divisors is an integer number (9613233440).

Almost surely, 257678441087 is an apocalyptic number.

57678441087 is a deficient number, since it is larger than the sum of its proper divisors (19227426433).

57678441087 is a wasteful number, since it uses less digits than its factorization.

57678441087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319853.

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 57678441087 in words is "fifty-seven billion, six hundred seventy-eight million, four hundred forty-one thousand, eighty-seven".

Divisors: 1 3 80239 239611 240717 718833 19226147029 57678441087