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180853005081 = 378612047861
BaseRepresentation
bin1010100001101110101…
…1011101101100011001
3122021210221211120020110
42220123223131230121
510430341332130311
6215025511314533
716031464115250
oct2503353355431
9567727746213
10180853005081
116a776896561
122b07337ba49
1314092595598
148a79201797
154a875508a6
hex2a1baddb19

180853005081 has 8 divisors (see below), whose sum is σ = 275585531584. Its totient is φ = 103344574320.

The previous prime is 180853005049. The next prime is 180853005131. The reversal of 180853005081 is 180500358081.

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

It is not a de Polignac number, because 180853005081 - 25 = 180853005049 is a prime.

It is a super-2 number, since 2×1808530050812 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180853001081) 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, 4306023910 + ... + 4306023951.

It is an arithmetic number, because the mean of its divisors is an integer number (34448191448).

Almost surely, 2180853005081 is an apocalyptic number.

It is an amenable number.

180853005081 is a deficient number, since it is larger than the sum of its proper divisors (94732526503).

180853005081 is an equidigital number, since it uses as much as digits as its factorization.

180853005081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8612047871.

The product of its (nonzero) digits is 38400, while the sum is 39.

The spelling of 180853005081 in words is "one hundred eighty billion, eight hundred fifty-three million, five thousand, eighty-one".

Divisors: 1 3 7 21 8612047861 25836143583 60284335027 180853005081