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144818042779 = 857168982547
BaseRepresentation
bin1000011011011111010…
…0111111011110011011
3111211210121200210221001
42012313310333132123
54333041404332104
6150310053125431
713314504024154
oct2066764773633
9454717623831
10144818042779
1156465011a83
1224097329877
131086bb12b97
14701b48692b
153b78bd4aa4
hex21b7d3f79b

144818042779 has 4 divisors (see below), whose sum is σ = 144987026184. Its totient is φ = 144649059376.

The previous prime is 144818042771. The next prime is 144818042827. The reversal of 144818042779 is 977240818441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977240818441 = 3163308960107.

It is a cyclic number.

It is not a de Polignac number, because 144818042779 - 23 = 144818042771 is a prime.

It is a super-3 number, since 3×1448180427793 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144818042771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84490417 + ... + 84492130.

It is an arithmetic number, because the mean of its divisors is an integer number (36246756546).

Almost surely, 2144818042779 is an apocalyptic number.

144818042779 is a deficient number, since it is larger than the sum of its proper divisors (168983405).

144818042779 is an equidigital number, since it uses as much as digits as its factorization.

144818042779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168983404.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 144818042779 in words is "one hundred forty-four billion, eight hundred eighteen million, forty-two thousand, seven hundred seventy-nine".

Divisors: 1 857 168982547 144818042779