Search a number
-
+
85284690941 = 212161401981
BaseRepresentation
bin100111101101101011…
…1010001101111111101
322011010122012012010002
41033123113101233331
52344130340102231
6103102414524045
76106301624552
oct1173327215775
9264118165102
1085284690941
1133194a9165a
1214641806625
138071c61288
1441b0986a29
15234240d0cb
hex13db5d1bfd

85284690941 has 4 divisors (see below), whose sum is σ = 85285305084. Its totient is φ = 85284076800.

The previous prime is 85284690937. The next prime is 85284690949. The reversal of 85284690941 is 14909648258.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 83393310841 + 1891380100 = 288779^2 + 43490^2 .

It is a cyclic number.

It is not a de Polignac number, because 85284690941 - 22 = 85284690937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85284690949) 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, 11171 + ... + 413151.

It is an arithmetic number, because the mean of its divisors is an integer number (21321326271).

Almost surely, 285284690941 is an apocalyptic number.

It is an amenable number.

85284690941 is a deficient number, since it is larger than the sum of its proper divisors (614143).

85284690941 is a wasteful number, since it uses less digits than its factorization.

85284690941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614142.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 85284690941 in words is "eighty-five billion, two hundred eighty-four million, six hundred ninety thousand, nine hundred forty-one".

Divisors: 1 212161 401981 85284690941