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87885484427 = 136760421879
BaseRepresentation
bin101000111011001100…
…0100001000110001011
322101211220001012001202
41101312120201012023
52414442141000202
6104212442534415
76230612202056
oct1216630410613
9271756035052
1087885484427
11342aa079264
121504880740b
138397a21430
14437a153a9d
1524458e8802
hex147662118b

87885484427 has 4 divisors (see below), whose sum is σ = 94645906320. Its totient is φ = 81125062536.

The previous prime is 87885484397. The next prime is 87885484481. The reversal of 87885484427 is 72448458878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72448458878 = 236224229439.

It is a cyclic number.

It is not a de Polignac number, because 87885484427 - 234 = 70705615243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87885484327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3380210927 + ... + 3380210952.

It is an arithmetic number, because the mean of its divisors is an integer number (23661476580).

Almost surely, 287885484427 is an apocalyptic number.

87885484427 is a deficient number, since it is larger than the sum of its proper divisors (6760421893).

87885484427 is a wasteful number, since it uses less digits than its factorization.

87885484427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760421892.

The product of its digits is 128450560, while the sum is 65.

The spelling of 87885484427 in words is "eighty-seven billion, eight hundred eighty-five million, four hundred eighty-four thousand, four hundred twenty-seven".

Divisors: 1 13 6760421879 87885484427