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88280665265 = 5134177325153
BaseRepresentation
bin101001000110111110…
…0000000110010110001
322102212102122110021002
41102031330000302301
52421244322242030
6104320001011345
76243451162562
oct1221574006261
9272772573232
1088280665265
11344921524a1
1215139023b55
13842b866350
1443b6822169
15246a459245
hex148df00cb1

88280665265 has 16 divisors (see below), whose sum is σ = 114113446608. Its totient is φ = 65176068096.

The previous prime is 88280665229. The next prime is 88280665271. The reversal of 88280665265 is 56256608288.

It can be written as a sum of positive squares in 8 ways, for example, as 1393080976 + 86887584289 = 37324^2 + 294767^2 .

It is a cyclic number.

It is not a de Polignac number, because 88280665265 - 224 = 88263888049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88280665265.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108929 + ... + 434081.

It is an arithmetic number, because the mean of its divisors is an integer number (7132090413).

Almost surely, 288280665265 is an apocalyptic number.

It is an amenable number.

88280665265 is a deficient number, since it is larger than the sum of its proper divisors (25832781343).

88280665265 is a wasteful number, since it uses less digits than its factorization.

88280665265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329348.

The product of its (nonzero) digits is 11059200, while the sum is 56.

The spelling of 88280665265 in words is "eighty-eight billion, two hundred eighty million, six hundred sixty-five thousand, two hundred sixty-five".

Divisors: 1 5 13 65 4177 20885 54301 271505 325153 1625765 4226989 21134945 1358164081 6790820405 17656133053 88280665265