Search a number
-
+
87032137551667 = 7211161469642953
BaseRepresentation
bin10011110010011110111111…
…101001001000111100110011
3102102011012011022021210000121
4103302132333221020330303
542401413304203123132
6505034002333231111
724221602334063500
oct2362367751107463
9372135138253017
1087032137551667
11258051387a7740
1299174b2932497
13397413165aab9
14176c5410984a7
15a0dd8b745497
hex4f27bfa48f33

87032137551667 has 12 divisors (see below), whose sum is σ = 110445235780536. Its totient is φ = 67817250039840.

The previous prime is 87032137551649. The next prime is 87032137551761. The reversal of 87032137551667 is 76615573123078.

It is not a de Polignac number, because 87032137551667 - 215 = 87032137518899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87032137551067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80734820938 + ... + 80734822015.

It is an arithmetic number, because the mean of its divisors is an integer number (9203769648378).

Almost surely, 287032137551667 is an apocalyptic number.

87032137551667 is a deficient number, since it is larger than the sum of its proper divisors (23413098228869).

87032137551667 is a wasteful number, since it uses less digits than its factorization.

87032137551667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161469642978 (or 161469642971 counting only the distinct ones).

The product of its (nonzero) digits is 44452800, while the sum is 61.

The spelling of 87032137551667 in words is "eighty-seven trillion, thirty-two billion, one hundred thirty-seven million, five hundred fifty-one thousand, six hundred sixty-seven".

Divisors: 1 7 11 49 77 539 161469642953 1130287500671 1776166072483 7912012504697 12433162507381 87032137551667