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80061630681 = 357374651771
BaseRepresentation
bin100101010010000001…
…0111000100011011001
321122122122002020101210
41022210002320203121
52302431234140211
6100440234333333
75533000426614
oct1124402704331
9248578066353
1080061630681
1130a5478112a
121362458a249
13771bb33086
143c3701d17b
152138ae49a6
hex12a40b88d9

80061630681 has 8 divisors (see below), whose sum is σ = 106767470944. Its totient is φ = 53365105440.

The previous prime is 80061630661. The next prime is 80061630683. The reversal of 80061630681 is 18603616008.

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

It is not a de Polignac number, because 80061630681 - 218 = 80061368537 is a prime.

It is a super-3 number, since 3×800616306813 (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80061630683) 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, 2308675 + ... + 2343096.

It is an arithmetic number, because the mean of its divisors is an integer number (13345933868).

Almost surely, 280061630681 is an apocalyptic number.

It is an amenable number.

80061630681 is a deficient number, since it is larger than the sum of its proper divisors (26705840263).

80061630681 is a wasteful number, since it uses less digits than its factorization.

80061630681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657511.

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 80061630681 in words is "eighty billion, sixty-one million, six hundred thirty thousand, six hundred eighty-one".

Divisors: 1 3 5737 17211 4651771 13955313 26687210227 80061630681