Search a number
-
+
69689943045 = 3251548665401
BaseRepresentation
bin100000011100111011…
…0000010010000000101
320122212210220220200200
41000321312002100011
52120211111134140
652003133201113
75014660512342
oct1007166022005
9218783826620
1069689943045
1127612179758
121160b030199
1367581380b8
1435317857c9
151c2d2b7030
hex1039d82405

69689943045 has 12 divisors (see below), whose sum is σ = 120795901356. Its totient is φ = 37167969600.

The previous prime is 69689942977. The next prime is 69689943047. The reversal of 69689943045 is 54034998696.

It can be written as a sum of positive squares in 2 ways, for example, as 15903984321 + 53785958724 = 126111^2 + 231918^2 .

It is not a de Polignac number, because 69689943045 - 211 = 69689940997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69689943047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 774332656 + ... + 774332745.

It is an arithmetic number, because the mean of its divisors is an integer number (10066325113).

Almost surely, 269689943045 is an apocalyptic number.

It is an amenable number.

69689943045 is a deficient number, since it is larger than the sum of its proper divisors (51105958311).

69689943045 is a wasteful number, since it uses less digits than its factorization.

69689943045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548665412 (or 1548665409 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 69689943045 in words is "sixty-nine billion, six hundred eighty-nine million, nine hundred forty-three thousand, forty-five".

Divisors: 1 3 5 9 15 45 1548665401 4645996203 7743327005 13937988609 23229981015 69689943045