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27823160005 = 531317778377
BaseRepresentation
bin11001111010011000…
…111011101011000101
32122211001011222021121
4121322120323223011
5423440212110010
620440510513541
72003324646364
oct317230735305
978731158247
1027823160005
11108884a2a13
125485b058b1
1328153b22b4
1414bd2b97db
15acc9843da
hex67a63bac5

27823160005 has 8 divisors (see below), whose sum is σ = 33494464152. Its totient is φ = 22187413248.

The previous prime is 27823159963. The next prime is 27823160009. The reversal of 27823160005 is 50006132872.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3222492289 + 24600667716 = 56767^2 + 156846^2 .

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 27823160005 - 27 = 27823159877 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 (27823160009) 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, 8887624 + ... + 8890753.

It is an arithmetic number, because the mean of its divisors is an integer number (4186808019).

Almost surely, 227823160005 is an apocalyptic number.

It is an amenable number.

27823160005 is a deficient number, since it is larger than the sum of its proper divisors (5671304147).

27823160005 is a wasteful number, since it uses less digits than its factorization.

27823160005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17778695.

The product of its (nonzero) digits is 20160, while the sum is 34.

Adding to 27823160005 its reverse (50006132872), we get a palindrome (77829292877).

The spelling of 27823160005 in words is "twenty-seven billion, eight hundred twenty-three million, one hundred sixty thousand, five".

Divisors: 1 5 313 1565 17778377 88891885 5564632001 27823160005