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80204223551 = 1721372207719
BaseRepresentation
bin100101010110010001…
…0110101010000111111
321200000120101201001012
41022230202311100333
52303224240123201
6100502330505435
75536351436354
oct1125442652077
9250016351035
1080204223551
1131018214281
121366429527b
13774253a65a
143c4bd3a62b
1521463ae5bb
hex12ac8b543f

80204223551 has 8 divisors (see below), whose sum is σ = 84961896480. Its totient is φ = 75450970368.

The previous prime is 80204223509. The next prime is 80204223553. The reversal of 80204223551 is 15532240208.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80204223551 is a prime.

It is a super-3 number, since 3×802042235513 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80204223553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067531 + ... + 1140188.

It is an arithmetic number, because the mean of its divisors is an integer number (10620237060).

Almost surely, 280204223551 is an apocalyptic number.

80204223551 is a deficient number, since it is larger than the sum of its proper divisors (4757672929).

80204223551 is a wasteful number, since it uses less digits than its factorization.

80204223551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209873.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 80204223551 its reverse (15532240208), we get a palindrome (95736463759).

The spelling of 80204223551 in words is "eighty billion, two hundred four million, two hundred twenty-three thousand, five hundred fifty-one".

Divisors: 1 17 2137 36329 2207719 37531223 4717895503 80204223551