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80881704080 = 2451011021301
BaseRepresentation
bin100101101010011101…
…1001101110010010000
321201202210012021121122
41023110323031302100
52311121204012310
6101053451341412
75562216066302
oct1132473156220
9251683167548
1080881704080
1131335682441
1213813151868
13781c9c38c8
143cb3cd1972
152185ad4555
hex12d4ecdc90

80881704080 has 20 divisors (see below), whose sum is σ = 188049962172. Its totient is φ = 32352681600.

The previous prime is 80881704061. The next prime is 80881704103. The reversal of 80881704080 is 8040718808.

It can be written as a sum of positive squares in 2 ways, for example, as 59105389456 + 21776314624 = 243116^2 + 147568^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505510571 + ... + 505510730.

Almost surely, 280881704080 is an apocalyptic number.

80881704080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80881704080 is an abundant number, since it is smaller than the sum of its proper divisors (107168258092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80881704080 is a wasteful number, since it uses less digits than its factorization.

80881704080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011021314 (or 1011021308 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 44.

The spelling of 80881704080 in words is "eighty billion, eight hundred eighty-one million, seven hundred four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1011021301 2022042602 4044085204 5055106505 8088170408 10110213010 16176340816 20220426020 40440852040 80881704080