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87664300845 = 3511531298793
BaseRepresentation
bin101000110100100110…
…0110001001100101101
322101021110211220020020
41101221030301030231
52414014030111340
6104134502112353
76222255156012
oct1215114611455
9271243756206
1087664300845
11341a6237810
1214ba671b6b9
138360c5b084
144358a19709
1524312a79d0
hex146933132d

87664300845 has 16 divisors (see below), whose sum is σ = 153014052672. Its totient is φ = 42503903360.

The previous prime is 87664300837. The next prime is 87664300909. The reversal of 87664300845 is 54800346678.

It is not a de Polignac number, because 87664300845 - 23 = 87664300837 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 265649232 + ... + 265649561.

It is an arithmetic number, because the mean of its divisors is an integer number (9563378292).

Almost surely, 287664300845 is an apocalyptic number.

It is an amenable number.

87664300845 is a deficient number, since it is larger than the sum of its proper divisors (65349751827).

87664300845 is a wasteful number, since it uses less digits than its factorization.

87664300845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531298812.

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 87664300845 in words is "eighty-seven billion, six hundred sixty-four million, three hundred thousand, eight hundred forty-five".

Divisors: 1 3 5 11 15 33 55 165 531298793 1593896379 2656493965 5844286723 7969481895 17532860169 29221433615 87664300845