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64505002041 = 328218729869
BaseRepresentation
bin111100000100110011…
…000011100000111001
320011111110112121202200
4330010303003200321
52024101240031131
645344434020413
74442331320304
oct740463034071
9204443477680
1064505002041
11253a1434847
1210602717709
13610cb9567c
14319cd01b3b
151a27ecd2e6
hexf04cc3839

64505002041 has 12 divisors (see below), whose sum is σ = 93287390820. Its totient is φ = 42950950560.

The previous prime is 64505002031. The next prime is 64505002069. The reversal of 64505002041 is 14020050546.

64505002041 is a `hidden beast` number, since 6 + 450 + 5 + 0 + 0 + 204 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17026335225 + 47478666816 = 130485^2 + 217896^2 .

It is not a de Polignac number, because 64505002041 - 231 = 62357518393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64505001996 and 64505002014.

It is not an unprimeable number, because it can be changed into a prime (64505002031) 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, 4357546 + ... + 4372323.

It is an arithmetic number, because the mean of its divisors is an integer number (7773949235).

Almost surely, 264505002041 is an apocalyptic number.

It is an amenable number.

64505002041 is a deficient number, since it is larger than the sum of its proper divisors (28782388779).

64505002041 is a wasteful number, since it uses less digits than its factorization.

64505002041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8730696 (or 8730693 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 64505002041 its reverse (14020050546), we get a palindrome (78525052587).

The spelling of 64505002041 in words is "sixty-four billion, five hundred five million, two thousand, forty-one".

Divisors: 1 3 9 821 2463 7389 8729869 26189607 78568821 7167222449 21501667347 64505002041