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80887040104 = 23135314674717
BaseRepresentation
bin100101101010100111…
…1100100100001101000
321201210011020101021011
41023111033210201220
52311124040240404
6101054201553304
75562312332233
oct1132517444150
9251704211234
1080887040104
1131338697482
1213814aa5834
137820b41610
143cb48c041a
1521862da604
hex12d53e4868

80887040104 has 32 divisors (see below), whose sum is σ = 166411302120. Its totient is φ = 36628091136.

The previous prime is 80887040099. The next prime is 80887040123. The reversal of 80887040104 is 40104078808.

It can be written as a sum of positive squares in 4 ways, for example, as 75630500100 + 5256540004 = 275010^2 + 72502^2 .

It is a super-2 number, since 2×808870401042 (a number of 23 digits) contains 22 as substring.

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, 7331847 + ... + 7342870.

Almost surely, 280887040104 is an apocalyptic number.

It is an amenable number.

80887040104 is an abundant number, since it is smaller than the sum of its proper divisors (85524262016).

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

80887040104 is a wasteful number, since it uses less digits than its factorization.

80887040104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14674789 (or 14674785 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The spelling of 80887040104 in words is "eighty billion, eight hundred eighty-seven million, forty thousand, one hundred four".

Divisors: 1 2 4 8 13 26 52 53 104 106 212 424 689 1378 2756 5512 14674717 29349434 58698868 117397736 190771321 381542642 763085284 777760001 1526170568 1555520002 3111040004 6222080008 10110880013 20221760026 40443520052 80887040104