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80361860889 = 31011801147263
BaseRepresentation
bin100101011010111110…
…0001010111100011001
321200102120000111211010
41022311330022330121
52304040114022024
6100530121324133
75543304355422
oct1126574127431
9250376014733
1080361860889
11310991a2572
12136a9036649
1377690b189b
143c64c52649
15215514bb29
hex12b5f0af19

80361860889 has 16 divisors (see below), whose sum is σ = 108270849024. Its totient is φ = 53014320000.

The previous prime is 80361860881. The next prime is 80361860927. The reversal of 80361860889 is 98806816308.

It is not a de Polignac number, because 80361860889 - 23 = 80361860881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80361860881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472072 + ... + 619334.

It is an arithmetic number, because the mean of its divisors is an integer number (6766928064).

Almost surely, 280361860889 is an apocalyptic number.

It is an amenable number.

80361860889 is a deficient number, since it is larger than the sum of its proper divisors (27908988135).

80361860889 is a wasteful number, since it uses less digits than its factorization.

80361860889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149168.

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 80361860889 in words is "eighty billion, three hundred sixty-one million, eight hundred sixty thousand, eight hundred eighty-nine".

Divisors: 1 3 101 303 1801 5403 147263 181901 441789 545703 14873563 44620689 265220663 795661989 26787286963 80361860889