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56123587347 = 3171100462497
BaseRepresentation
bin110100010001001110…
…011111101100010011
312100212100102122021020
4310101032133230103
51404420114243342
641441031130523
74024536423042
oct642116375423
9170770378236
1056123587347
1121890335943
12aa63813a43
1353a561a4a9
142a05b10559
1516d72910ec
hexd1139fb13

56123587347 has 8 divisors (see below), whose sum is σ = 79233299856. Its totient is φ = 35214799872.

The previous prime is 56123587343. The next prime is 56123587363. The reversal of 56123587347 is 74378532165.

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

It is not a de Polignac number, because 56123587347 - 22 = 56123587343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 1100462497 = 56123587347 / (5 + 6 + 1 + 2 + 3 + 5 + 8 + 7 + 3 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 56123587347.

It is not an unprimeable number, because it can be changed into a prime (56123587343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550231198 + ... + 550231299.

It is an arithmetic number, because the mean of its divisors is an integer number (9904162482).

Almost surely, 256123587347 is an apocalyptic number.

56123587347 is a deficient number, since it is larger than the sum of its proper divisors (23109712509).

56123587347 is a wasteful number, since it uses less digits than its factorization.

56123587347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100462517.

The product of its digits is 4233600, while the sum is 51.

The spelling of 56123587347 in words is "fifty-six billion, one hundred twenty-three million, five hundred eighty-seven thousand, three hundred forty-seven".

Divisors: 1 3 17 51 1100462497 3301387491 18707862449 56123587347