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56380165679 = 1928116576373
BaseRepresentation
bin110100100000100001…
…010000111000101111
312101112020020011120102
4310200201100320233
51410431310300204
641522314341315
74034103333605
oct644041207057
9171466204512
1056380165679
1121a02151a52
12ab1572a83b
1354168241a6
142a2bc1d875
1516eea7441e
hexd20850e2f

56380165679 has 16 divisors (see below), whose sum is σ = 59604038880. Its totient is φ = 53182241280.

The previous prime is 56380165669. The next prime is 56380165691. The reversal of 56380165679 is 97656108365.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56380165679 - 24 = 56380165663 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 (56380165669) 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, 8843537 + ... + 8849909.

It is an arithmetic number, because the mean of its divisors is an integer number (3725252430).

Almost surely, 256380165679 is an apocalyptic number.

56380165679 is a deficient number, since it is larger than the sum of its proper divisors (3223873201).

56380165679 is a wasteful number, since it uses less digits than its factorization.

56380165679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8330.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 56380165679 in words is "fifty-six billion, three hundred eighty million, one hundred sixty-five thousand, six hundred seventy-nine".

Divisors: 1 19 281 1657 5339 6373 31483 121087 465617 1790813 8846723 10560061 34025447 200641159 2967377141 56380165679