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80888585761 = 591370992979
BaseRepresentation
bin100101101010101010…
…1011101111000100001
321201210021010220111201
41023111111131320201
52311124434221021
6101054255041201
75562331430434
oct1132525357041
9251707126451
1080888585761
1131339552785
1213815510201
137821262cc9
143cb4ba381b
1521864e3591
hex12d555de21

80888585761 has 4 divisors (see below), whose sum is σ = 82259578800. Its totient is φ = 79517592724.

The previous prime is 80888585731. The next prime is 80888585783. The reversal of 80888585761 is 16758588808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80888585761 - 27 = 80888585633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80888585693 and 80888585702.

It is not an unprimeable number, because it can be changed into a prime (80888585711) 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 3 ways as a sum of consecutive naturals, for example, 685496431 + ... + 685496548.

It is an arithmetic number, because the mean of its divisors is an integer number (20564894700).

Almost surely, 280888585761 is an apocalyptic number.

It is an amenable number.

80888585761 is a deficient number, since it is larger than the sum of its proper divisors (1370993039).

80888585761 is a wasteful number, since it uses less digits than its factorization.

80888585761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370993038.

The product of its (nonzero) digits is 34406400, while the sum is 64.

The spelling of 80888585761 in words is "eighty billion, eight hundred eighty-eight million, five hundred eighty-five thousand, seven hundred sixty-one".

Divisors: 1 59 1370992979 80888585761