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86980888687 = 7112349113997
BaseRepresentation
bin101000100000001110…
…1110000100001101111
322022111211212221222211
41101000131300201233
52411114101414222
6103543010151251
76166316232520
oct1210035604157
9268454787884
1086980888687
1133985498080
1214a35882527
1382824a8c94
1442d1d5c847
1523e12b0277
hex144077086f

86980888687 has 16 divisors (see below), whose sum is σ = 113158651392. Its totient is φ = 64830474720.

The previous prime is 86980888651. The next prime is 86980888691. The reversal of 86980888687 is 78688808968.

It is not a de Polignac number, because 86980888687 - 231 = 84833405039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86980888697) 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, 24555228 + ... + 24558769.

It is an arithmetic number, because the mean of its divisors is an integer number (7072415712).

Almost surely, 286980888687 is an apocalyptic number.

86980888687 is a deficient number, since it is larger than the sum of its proper divisors (26177762705).

86980888687 is a wasteful number, since it uses less digits than its factorization.

86980888687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49114038.

The product of its (nonzero) digits is 594542592, while the sum is 76.

The spelling of 86980888687 in words is "eighty-six billion, nine hundred eighty million, eight hundred eighty-eight thousand, six hundred eighty-seven".

Divisors: 1 7 11 23 77 161 253 1771 49113997 343797979 540253967 1129621931 3781777769 7907353517 12425841241 86980888687