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80318881308 = 2236693240109
BaseRepresentation
bin100101011001101100…
…0001101111000011100
321200022120010220220210
41022303120031320130
52303443113200213
6100521544212420
75542243140501
oct1126330157034
9250276126823
1080318881308
1131076a07356
121369676a110
137760213a93
143c5d2654a8
1521514ac0c3
hex12b360de1c

80318881308 has 12 divisors (see below), whose sum is σ = 187410723080. Its totient is φ = 26772960432.

The previous prime is 80318881301. The next prime is 80318881319.

80318881308 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×803188813082 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80318881301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3346620043 + ... + 3346620066.

Almost surely, 280318881308 is an apocalyptic number.

It is an amenable number.

80318881308 is an abundant number, since it is smaller than the sum of its proper divisors (107091841772).

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

80318881308 is a wasteful number, since it uses less digits than its factorization.

80318881308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6693240116 (or 6693240114 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 48.

The spelling of 80318881308 in words is "eighty billion, three hundred eighteen million, eight hundred eighty-one thousand, three hundred eight".

Divisors: 1 2 3 4 6 12 6693240109 13386480218 20079720327 26772960436 40159440654 80318881308