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87108660130 = 2533829257497
BaseRepresentation
bin101000100100000010…
…1001010101110100010
322022211202022102110111
41101020011022232202
52411344304111010
6104003412521534
76202430252152
oct1211005125642
9268752272414
1087108660130
1133a40627708
1214a706202aa
1382a2ac429b
144304cdc762
1523ec5ed58a
hex144814aba2

87108660130 has 16 divisors (see below), whose sum is σ = 156800832120. Its totient is φ = 34842298752.

The previous prime is 87108660113. The next prime is 87108660131. The reversal of 87108660130 is 3106680178.

It can be written as a sum of positive squares in 4 ways, for example, as 86681369889 + 427290241 = 294417^2 + 20671^2 .

It is not an unprimeable number, because it can be changed into a prime (87108660131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209542 + ... + 467038.

Almost surely, 287108660130 is an apocalyptic number.

87108660130 is a deficient number, since it is larger than the sum of its proper divisors (69692171990).

87108660130 is a wasteful number, since it uses less digits than its factorization.

87108660130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291333.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 87108660130 in words is "eighty-seven billion, one hundred eight million, six hundred sixty thousand, one hundred thirty".

Divisors: 1 2 5 10 33829 67658 169145 257497 338290 514994 1287485 2574970 8710866013 17421732026 43554330065 87108660130