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80380287776879 = 1918664722666003
BaseRepresentation
bin10010010001101011111110…
…011111111111100001101111
3101112121021120110101201000222
4102101223332133333201233
541013422312132330004
6442542105555241555
722634166314645156
oct2221537637774157
9345537513351028
1080380287776879
11236800a7a38552
1290222a38a92bb
1335b0aa0603cbc
1415bc5d8b8259d
15945d209ad7be
hex491afe7ff86f

80380287776879 has 8 divisors (see below), whose sum is σ = 84611286291840. Its totient is φ = 76149334967256.

The previous prime is 80380287776863. The next prime is 80380287776927. The reversal of 80380287776879 is 97867778208308.

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 80380287776879 - 24 = 80380287776863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80380287776779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7786709 + ... + 14879294.

It is an arithmetic number, because the mean of its divisors is an integer number (10576410786480).

Almost surely, 280380287776879 is an apocalyptic number.

80380287776879 is a deficient number, since it is larger than the sum of its proper divisors (4230998514961).

80380287776879 is a wasteful number, since it uses less digits than its factorization.

80380287776879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22852669.

The product of its (nonzero) digits is 3186376704, while the sum is 80.

The spelling of 80380287776879 in words is "eighty trillion, three hundred eighty billion, two hundred eighty-seven million, seven hundred seventy-six thousand, eight hundred seventy-nine".

Divisors: 1 19 186647 3546293 22666003 430654057 4230541461941 80380287776879