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56104161655 = 561183948071
BaseRepresentation
bin110100010000000100…
…011001000101110111
312100210222212201020011
4310100010121011313
51404400131133110
641435054521051
74024212335263
oct642004310567
9170728781204
1056104161655
1121880378053
12aa59206187
1353a15a85b9
142a032d50a3
1516d570548a
hexd10119177

56104161655 has 8 divisors (see below), whose sum is σ = 68428682784. Its totient is φ = 44147536800.

The previous prime is 56104161623. The next prime is 56104161679. The reversal of 56104161655 is 55616140165.

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

It is not a de Polignac number, because 56104161655 - 25 = 56104161623 is a prime.

It is a super-3 number, since 3×561041616553 (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91973731 + ... + 91974340.

It is an arithmetic number, because the mean of its divisors is an integer number (8553585348).

Almost surely, 256104161655 is an apocalyptic number.

56104161655 is a deficient number, since it is larger than the sum of its proper divisors (12324521129).

56104161655 is a wasteful number, since it uses less digits than its factorization.

56104161655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183948137.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 56104161655 in words is "fifty-six billion, one hundred four million, one hundred sixty-one thousand, six hundred fifty-five".

Divisors: 1 5 61 305 183948071 919740355 11220832331 56104161655