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1681041485107 = 8772073192461
BaseRepresentation
bin11000011101100101111…
…000010110110100110011
312221201001200010110221201
4120131211320112310303
5210020233110010412
63324132041032031
7232310526601255
oct30354570266463
95851050113851
101681041485107
11598a20103766
12231969485617
13c26a1a6181a
145b5118d1cd5
152dadb22ae57
hex18765e16d33

1681041485107 has 8 divisors (see below), whose sum is σ = 1683057677552. Its totient is φ = 1679025520800.

The previous prime is 1681041485093. The next prime is 1681041485147. The reversal of 1681041485107 is 7015841401861.

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 1681041485107 - 215 = 1681041452339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681041485147) 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, 18134857 + ... + 18227317.

It is an arithmetic number, because the mean of its divisors is an integer number (210382209694).

Almost surely, 21681041485107 is an apocalyptic number.

1681041485107 is a deficient number, since it is larger than the sum of its proper divisors (2016192445).

1681041485107 is an equidigital number, since it uses as much as digits as its factorization.

1681041485107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114069.

The product of its (nonzero) digits is 215040, while the sum is 46.

Adding to 1681041485107 its reverse (7015841401861), we get a palindrome (8696882886968).

The spelling of 1681041485107 in words is "one trillion, six hundred eighty-one billion, forty-one million, four hundred eighty-five thousand, one hundred seven".

Divisors: 1 877 20731 92461 18181087 81088297 1916808991 1681041485107