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80170460990 = 2517471590947
BaseRepresentation
bin100101010101010001…
…0000010011100111110
321122221012212101111222
41022222202002130332
52303142114222430
6100455123113342
75535461450264
oct1125242023476
9248835771458
1080170460990
1131000153a34
1213654b12852
137738548bc9
143c4766c434
1521434409e5
hex12aa88273e

80170460990 has 16 divisors (see below), whose sum is σ = 152795467152. Its totient is φ = 30181820544.

The previous prime is 80170460987. The next prime is 80170461017. The reversal of 80170460990 is 9906407108.

It is a super-2 number, since 2×801704609902 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235795304 + ... + 235795643.

It is an arithmetic number, because the mean of its divisors is an integer number (9549716697).

Almost surely, 280170460990 is an apocalyptic number.

80170460990 is a deficient number, since it is larger than the sum of its proper divisors (72625006162).

80170460990 is a wasteful number, since it uses less digits than its factorization.

80170460990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471590971.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 80170460990 in words is "eighty billion, one hundred seventy million, four hundred sixty thousand, nine hundred ninety".

Divisors: 1 2 5 10 17 34 85 170 471590947 943181894 2357954735 4715909470 8017046099 16034092198 40085230495 80170460990