Search a number
-
+
87869425585 = 5131913323643
BaseRepresentation
bin101000111010101101…
…1010000011110110001
322101210202211022110211
41101311123100132301
52414424033104320
6104211110424121
76230325536224
oct1216533203661
9271722738424
1087869425585
11342a0aaaa97
1215043362041
1383945bab66
144377d735bb
1524442c555a
hex14756d07b1

87869425585 has 8 divisors (see below), whose sum is σ = 105523260480. Its totient is φ = 70242240624.

The previous prime is 87869425583. The next prime is 87869425619. The reversal of 87869425585 is 58552496878.

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 87869425585 - 21 = 87869425583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87869425585.

It is not an unprimeable number, because it can be changed into a prime (87869425583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6655227 + ... + 6668416.

It is an arithmetic number, because the mean of its divisors is an integer number (13190407560).

Almost surely, 287869425585 is an apocalyptic number.

It is an amenable number.

87869425585 is a deficient number, since it is larger than the sum of its proper divisors (17653834895).

87869425585 is a wasteful number, since it uses less digits than its factorization.

87869425585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13324967.

The product of its digits is 193536000, while the sum is 67.

The spelling of 87869425585 in words is "eighty-seven billion, eight hundred sixty-nine million, four hundred twenty-five thousand, five hundred eighty-five".

Divisors: 1 5 1319 6595 13323643 66618215 17573885117 87869425585