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87163078487 = 1730707166973
BaseRepresentation
bin101000100101101010…
…0110000011101010111
322022222112201011102012
41101023110300131113
52412002222002422
6104013035134435
76203660641232
oct1211324603527
9268875634365
1087163078487
1133a69315a61
1214a868a441b
1382b11687b4
14430c226419
15240229c4e2
hex144b530757

87163078487 has 8 divisors (see below), whose sum is σ = 92293876656. Its totient is φ = 82032675712.

The previous prime is 87163078427. The next prime is 87163078489. The reversal of 87163078487 is 78487036178.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87163078487 - 232 = 82868111191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87163078489) 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, 438533 + ... + 605505.

It is an arithmetic number, because the mean of its divisors is an integer number (11536734582).

Almost surely, 287163078487 is an apocalyptic number.

87163078487 is a deficient number, since it is larger than the sum of its proper divisors (5130798169).

87163078487 is a wasteful number, since it uses less digits than its factorization.

87163078487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197697.

The product of its (nonzero) digits is 12644352, while the sum is 59.

The spelling of 87163078487 in words is "eighty-seven billion, one hundred sixty-three million, seventy-eight thousand, four hundred eighty-seven".

Divisors: 1 17 30707 166973 522019 2838541 5127239911 87163078487