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87345208811 = 731676007649
BaseRepresentation
bin101000101011000101…
…1100001110111101011
322100110020102100020202
41101112023201313223
52412340333140221
6104043102542415
76211332011360
oct1212613416753
9270406370222
1087345208811
1134052103193
1214b17897a0b
13830cb07213
1443284b6467
152413276d0b
hex14562e1deb

87345208811 has 16 divisors (see below), whose sum is σ = 104581171200. Its totient is φ = 71370858240.

The previous prime is 87345208787. The next prime is 87345208813. The reversal of 87345208811 is 11880254378.

It is a cyclic number.

It is not a de Polignac number, because 87345208811 - 222 = 87341014507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87345208813) 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, 2989286 + ... + 3018363.

It is an arithmetic number, because the mean of its divisors is an integer number (6536323200).

Almost surely, 287345208811 is an apocalyptic number.

87345208811 is a deficient number, since it is larger than the sum of its proper divisors (17235962389).

87345208811 is a wasteful number, since it uses less digits than its factorization.

87345208811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007754.

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 87345208811 in words is "eighty-seven billion, three hundred forty-five million, two hundred eight thousand, eight hundred eleven".

Divisors: 1 7 31 67 217 469 2077 14539 6007649 42053543 186237119 402512483 1303659833 2817587381 12477886973 87345208811