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1980441815673 = 34315352262137
BaseRepresentation
bin11100110100011011100…
…001111110101001111001
321000022212101200010212210
4130310123201332221321
5224421421101100143
64113445153125333
7263040123452346
oct34643341765171
97008771603783
101980441815673
116a399a858492
1227b9a5b59849
131149a757c139
146bbd51357cd
15367b0e35033
hex1cd1b87ea79

1980441815673 has 8 divisors (see below), whose sum is σ = 2701998136288. Its totient is φ = 1289590019424.

The previous prime is 1980441815593. The next prime is 1980441815707. The reversal of 1980441815673 is 3765181440891.

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

It is not a de Polignac number, because 1980441815673 - 212 = 1980441811577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980441815773) 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, 7676130940 + ... + 7676131197.

It is an arithmetic number, because the mean of its divisors is an integer number (337749767036).

Almost surely, 21980441815673 is an apocalyptic number.

It is an amenable number.

1980441815673 is a deficient number, since it is larger than the sum of its proper divisors (721556320615).

1980441815673 is a wasteful number, since it uses less digits than its factorization.

1980441815673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15352262183.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 1980441815673 in words is "one trillion, nine hundred eighty billion, four hundred forty-one million, eight hundred fifteen thousand, six hundred seventy-three".

Divisors: 1 3 43 129 15352262137 46056786411 660147271891 1980441815673